<PAGE>   1
                                                                     EXHIBIT 4.3


THE WARRANT GRANTED PURSUANT TO THIS AGREEMENT SHALL BE NON-TRANSFERABLE, EXCEPT
IN THE CASE OF THE WARRANT HOLDER'S DEATH, AND THEREUPON ONLY BY WILL OR UNDER
THE LAWS OF DESCENT AND DISTRIBUTION. UPON THE DEATH OF THE WARRANT HOLDER, THE
DECEASED HOLDER'S LEGAL OR PERSONAL REPRESENTATIVE, OR ANY PERMITTED TRANSFEREE
OF THE WARRANT SHALL, WITHIN 30 DAYS OF THE HOLDER'S DEATH, NOTIFY THE COMPANY
OF SUCH EVENT AND THE NEW HOLDER'S NAME, ADDRESS AND CAPACITY IN WHICH THE
WARRANT IS HELD. SUCH PERMITTED TRANSFEREE WILL BE SUBJECT TO, AND BOUND BY, THE
TERMS AND PROVISIONS OF THIS AGREEMENT TO THE SAME EXTENT AS THE ORIGINAL
HOLDER.

                           ORGANIZER WARRANT AGREEMENT

         THIS AGREEMENT (this "Agreement") is made and entered into as of this
_____ day of _____________, ____, by and between C & S Bancorporation, Inc., a
Georgia corporation (the "Company"), and ________________________ (the "Warrant
Holder").

                                   WITNESSETH

         WHEREAS, the Warrant Holder has served as an organizer in the formation
of the Company and the formation and establishment of Citizens & Southern Bank
(the "Bank"), the wholly-owned subsidiary of the Company; and

         WHEREAS, the Warrant Holder has purchased ___________ shares of the
Company's common stock, $1.00 par value per share (the "Common Stock"), at a
price per share of $10.00, subject to certain adjustments; and

         WHEREAS, the Company, in recognition of the financial risk undertaken
by the Warrant Holder in organizing the Company and the Bank, desires to provide
the Warrant Holder with the right to acquire the same number of shares as the
Warrant Holder purchased in the initial stock offering of the Company's Common
Stock, including any additional shares purchased specifically to attain the
minimum subscription requirements of the minimum offering.

         NOW, THEREFORE, in consideration of the premises and other good and
valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto agree as follows:

         1.       Grant of Warrant. Subject to the terms, restrictions,
limitations and conditions stated herein, the Company hereby grants to the
Warrant Holder the right (the "Warrant") to purchase all or any part of an
aggregate of ______________ shares of the Company's Common
<PAGE>   2

Stock, subject to adjustment in accordance with Sections 7 and 8 hereof (such
shares, as adjusted, the "Warrant Shares").

         2.       Vesting and Term.

                  (a)      The Warrant shall vest at the rate of 25% per year
         beginning on the first anniversary of the date that the Bank opens for
         business (the "Issue Date"). On each successive anniversary of the
         Issue Date, an additional 25% of the Warrant shall vest. The portion of
         the Warrant which is vested may be exercised in whole, or from time to
         time in part, at any time prior to the Expiration Time (as defined
         herein).

                  (b)      The term for the exercise of the Warrant begins at
         9:00 a.m., Eastern Time, on the Issue Date and ends at 5:00 p.m.,
         Eastern Time, on the 10th anniversary of the Issue Date (the
         "Expiration Time").

                  (c)      Notwithstanding any other provision of this
         Agreement, the Warrant shall expire on any earlier date than that
         provided in Section 2(b) hereof in the event the primary federal
         regulator of the Company or the Bank (the "Federal Regulator") may
         require the Warrant Holder to exercise or forfeit the Warrant due to
         the capital of the Company or the Bank falling below the minimum
         requirements as determined by the Federal Regulator.

         3.       Purchase Price. The price per share to be paid by the Warrant
Holder for the Warrant Shares shall be $10.00 subject to adjustment as set forth
in Section 7 hereof (such price, as adjusted, the "Purchase Price").

         4.       Exercise of Warrant. The Warrant may be exercised by the
Warrant Holder by delivery to the Company, at the address of the Company set
forth under Section 11(a) hereof or such other address as to which the Company
advises the Warrant Holder pursuant to Section 11(a) hereof, of the following:

                  (a)      A completed and signed notice of exercise (including
         the Substitute Form W-9, which forms a part thereof) (the "Notice of
         Exercise"), as attached hereto as Schedule A;

                  (b)      A cashier's or certified check payable to the Company
         for the full amount of the aggregate Purchase Price for the number of
         Warrant Shares as to which the Warrant is being exercised; and

                  (c)      A copy of this Agreement.

         5.       Issuance of Warrant Shares. Upon receipt of the items set
forth in Section 4 hereof, and subject to the terms hereof, the Company shall
cause to be delivered to the Warrant Holder stock certificate(s) for the number
of Warrant Shares specified in the Notice of Exercise, such share or shares to
be registered under the name of the Warrant Holder. Notwithstanding the


                                       2
<PAGE>   3

foregoing, the Company shall not be required to issue or deliver any certificate
for the Warrant Shares or any portion thereof prior to the fulfillment of the
following conditions:

                  (a)      The completion of any registration or other
         qualification of such shares which the Company shall deem necessary or
         advisable under any federal or state law or under the rulings or
         regulations of the Securities and Exchange Commission or any other
         governmental regulatory body, unless the availability of an exemption
         from such registration or qualification shall be established to the
         satisfaction of counsel for the Company;

                  (b)      The obtaining of any approval or other clearance from
         any federal or state governmental agency or body, which the Company
         shall determine to be necessary or advisable; or

                  (c)      The lapse of such reasonable period of time following
         the exercise of the Warrant, or any portion thereof, as the Company
         from time to time may establish for reasons of administrative
         convenience.

         Each stock certificate delivered pursuant to the Notice of Exercise
shall be in such denomination as may be requested by the Warrant Holder and
shall be registered in the name of the Warrant Holder. If the Warrant shall have
been exercised only in part, the Company shall, at the time of delivery of said
stock certificate(s), deliver to the Warrant Holder a new Warrant evidencing the
right of the Warrant Holder to purchase the remaining Warrant Shares covered by
this Agreement. The Company shall pay all expenses, stock transfer taxes and
other charges payable in connection with the preparation, execution and delivery
of such stock certificate(s).

         6.       Restrictive Legends. Each certificate representing the Warrant
Shares shall contain the following legends:

                  (a)      "The shares of the Company's Common Stock represented
         by this certificate are held subject to, and transfer of such shares
         restricted by, the terms of a Warrant Agreement, dated as of the ___
         day of _________, _____, a copy of which is on file at the office of
         the Company. No transfer of any share represented by this certificate
         shall be valid unless made in accordance with the terms of the Warrant
         Agreement."

                  (b)      "The securities evidenced by this certificate have
         not been registered under the Securities Act of 1933, as amended (the
         "1933 Act"), or the securities laws of any state, in reliance upon
         exemptions from the registration requirements of the 1933 Act and such
         state laws. These securities may not be transferred, nor will any
         assignee or endorsee hereof be recognized as an owner hereof by the
         issuer for any purposes, except in transactions registered under the
         1933 Act and any applicable state securities laws, unless the
         availability of an exemption from registration under the 1933 Act and
         any applicable state securities laws with respect to any proposed
         transfer or disposition of such securities shall be established to the
         satisfaction of counsel for the issuer."


                                       3
<PAGE>   4

         The Warrant Holder understands and agrees that the Company may refuse
to permit the transfer of the Warrant Shares, and that the Warrant Holder may be
required to hold the Warrant Shares indefinitely, in the absence of compliance
with the terms of such legends.

         7.       Antidilution, Etc.

                  (a)      If, at any time, the Company shall:

                           (i)      establish a record date for the
                  determination of holders of record of its outstanding shares
                  of Common Stock for the purpose of entitling them to receive a
                  dividend payable in, or other distributions of, additional
                  shares of its Common Stock;

                           (ii)     subdivide its outstanding shares of Common
                  Stock into a larger number of shares of Common Stock; or

                           (iii)    combine its outstanding shares of Common
                  Stock into a smaller number of shares of Common Stock;

         then (A) the number of Warrant Shares for which the Warrant Holder's
         Warrant is exercisable immediately after the occurrence of any such
         event shall be adjusted to equal the number of shares of Company Common
         Stock which a record holder of the same number of shares of Common
         Stock for which Warrant Shares is exercisable immediately prior to the
         occurrence of such event would own or be entitled to receive after the
         happening of such event, and (B) the Purchase Price shall be adjusted
         to equal (x) the Purchase Price multiplied by the Warrant Shares for
         which the Warrant Holder's Warrant is exercisable immediately prior to
         the adjustment divided by (y) the Warrant Shares for which Holder's
         Warrant is exercisable immediately after such adjustment.

                  (b)      The following provisions shall be applicable to
         adjustments made pursuant to Section 7(a) hereof:

                           (i)      The adjustments required by Section 7(a)
                  hereof shall be made whenever and as often as any event
                  requiring an adjustment shall occur. For the purpose of any
                  such adjustment, any event shall be deemed to have occurred at
                  the close of business on the date of its occurrence.

                           (ii)     In computing adjustments under this Section
                  7(b), fractional interests in the Company's Common Stock shall
                  be taken into account to the nearest 1/10th of a share. In no
                  event, however, shall fractional shares or a scrip
                  representing fractional shares be issued upon the exercise of
                  the Warrant. In lieu thereof, a cash payment shall be made to
                  the Warrant Holder in an amount equal to such fraction
                  multiplied by the Purchase Price.


                                       4
<PAGE>   5

                           (iii)    If the Company shall establish a record date
                  for the determination of the holders of record of the
                  Company's Common Stock for the purpose of entitling such
                  holders to receive a dividend payable in Company Common Stock
                  and shall, thereafter and before the distribution to
                  shareholders thereof, legally abandon its plan to pay or
                  deliver such dividend, then no adjustment shall be required by
                  reason of the establishment of such record date and any such
                  adjustment previously made in respect thereof shall be
                  rescinded and annulled.

         8.       Reorganization, Reclassification, Consolidation or Merger.

                  (a)      If, prior to the Expiration Time, there shall be any
         reorganization or reclassification of the Company's Common Stock (other
         than a subdivision or combination of shares provided for in Section 7
         hereof), or any consolidation or merger of the Company with another
         entity, the Warrant Holder shall thereafter be entitled to receive,
         during the term hereof and upon payment of the Purchase Price, the
         number of shares of stock or other securities or property of the
         Company or of the successor entity (or its parent company) resulting
         from such consolidation or merger, as the case may be, to which a
         holder of the Company's Common Stock, deliverable upon the exercise of
         the Warrant, would have been entitled upon such reorganization,
         reclassification, consolidation or merger; and in any case, appropriate
         adjustment (as determined by the Board of Directors of the Company in
         its sole discretion) shall be made in the application of the provisions
         herein set forth with respect to the rights and interest thereafter of
         the Warrant Holder to the end that the provisions set forth herein
         (including the adjustment of the Purchase Price and the Warrant Shares)
         shall thereafter be applicable, as near as may reasonably be
         practicable, in relation to any shares or other property thereafter
         deliverable upon the exercise hereof.

                  (b)      If any such reorganization, reclassification,
         consolidation, merger or share exchange results in a cash distribution
         in excess of the Purchase Price provided by this Warrant, the Warrant
         Holder may, at the Warrant Holder's option, exercise this Warrant
         without making payment of the Purchase Price, and in such case the
         Company or its successors and assigns shall, upon distribution to such
         Warrant Holder, consider the Purchase Price to have been paid in full,
         and in making settlement to such Warrant Holder, shall deduct an amount
         equal to the Purchase Price from the amount payable to such Warrant
         Holder. Notwithstanding anything herein to the contrary, the Company
         will not effect any such reorganization, reclassification, merger,
         consolidation or share exchange unless prior to the consummation
         thereof, the corporation that may be required to deliver any stock,
         securities or other assets upon the exercise of the Warrant issuable
         pursuant to this Agreement shall agree by an instrument in writing to
         deliver such stock, cash, securities or other assets to the Warrant
         Holder. A sale, transfer or lease of all or substantially all of the
         assets of the Company to another person shall be deemed a
         reorganization, reclassification, consolidation, merger or share
         exchange for the foregoing purposes.


                                       5
<PAGE>   6

         9.       Notice of Adjustments. Upon any adjustment provided for in
Section 7 or Section 8 hereof, the Company, within 30 days thereafter, shall
give written notice thereof to the Warrant Holder at the address set forth under
Section 11(a) hereof or such other address as the Warrant Holder may advise the
Company pursuant to Section 11(a) hereof, which notice shall state the Purchase
Price as adjusted and the increased or decreased number of Warrant Shares,
setting, forth in reasonable detail the method of calculation of each.

         10.      Transfer and Assignment.

                  (a)      This Agreement shall be non-transferable, except in
         the case of the Warrant Holder's death, and thereupon only by will or
         under the laws of descent and distribution. Upon the death of the
         Warrant Holder, the deceased Warrant Holder's heirs, legal or personal
         representative, or any permitted transferee of the Warrant shall,
         within 30 days of the Warrant Holder's death, notify the Company of
         such event and the new holder's name, address and capacity in which the
         Warrant is held, and present letters testamentary, a death certificate
         and such other information as the Company may reasonably request to
         ascertain the authority of such person. Such permitted transferee will
         be subject to, and bound by, the terms and provisions of this Agreement
         to the same extent as the original Warrant Holder.

                  (b)      The Warrant Shares granted hereby may not be
         transferred or sold unless the transfer is exempt from further
         regulatory approval or otherwise permissible under applicable law,
         including state and federal securities laws, and will bear a legend to
         this effect as set forth in Section 6 hereof.

         11.      Miscellaneous.

                  (a)      All notices, requests, demands and other
         communications required or permitted hereunder shall be in writing and
         shall be deemed to have been duly given when delivered by hand,
         telegram or facsimile transmission, or if mailed, by postage prepaid
         first class mail, on the third business day after mailing, to the
         following address (or at such other address as a party may notify the
         other hereunder):

         To the Company:

                  C & S Bancorporation, Inc.
                  P. O. Box 1248
                  Savannah, Georgia  31402
                  Attention:  Brian R. Foster,
                              President and Chief Executive Officer

         To the Warrant Holder:

                  -----------------------------

                  -----------------------------

                  -----------------------------


                                       6
<PAGE>   7

                  (b)      The Company covenants that it has reserved and will
         keep available, solely for the purpose of issue upon the exercise of
         the Warrant, a sufficient number of shares of the Company's Common
         Stock to permit the exercise of the Warrant in full.

                  (c)      No holder of the Warrant, as such, shall be entitled
         to vote or receive dividends with respect to the Warrant Shares subject
         thereto or be deemed to be a shareholder of the Company for any purpose
         until the Company's Common Stock has been issued.

                  (d)      This Agreement may be amended only by an instrument
         in writing executed by the party against whom enforcement of amendment
         is sought.

                  (e)      This Agreement may be executed in counterparts, each
         of which shall be deemed an original, but all of which shall constitute
         one and the same instrument.

                  (f)      This Agreement shall be governed by and construed and
         enforced in accordance with the laws of the State of Georgia.

         IN WITNESS WHEREOF, the Company has caused this Agreement to be signed
by a duly authorized officer and its corporate seal to be affixed hereto and the
Warrant Holder has executed this Agreement, all as of the day and year first
above written.


                                    C & S BANCORPORATION, INC.



                                    By:
                                        ---------------------------------------
                                        Brian R. Foster
                                        President and Chief Executive Officer


                                    WARRANT HOLDER



                                    -------------------------------------------


                                       7
<PAGE>   8

                                   SCHEDULE A

                               NOTICE OF EXERCISE
                     OF WARRANT TO PURCHASE COMMON STOCK OF
                           C & S BANCORPORATION, INC.


To:      C & S Bancorporation, Inc.

         The undersigned, the registered owner of the right to purchase shares
of Common Stock (the "Common Stock") of C & S Bancorporation, Inc. (the
"Company"), hereby irrevocably elects to exercise such right to purchase
thereunder ________ shares of the Common Stock of the Company and herewith makes
payment of $________ therefor, and requests that the certificate(s) evidencing
such shares be issued in the name of and be delivered to:

                Name:
                      --------------------------------------------
                Address:
                        ------------------------------------------

                        ------------------------------------------

                        ------------------------------------------

                Social Security or
                    Tax I.D. Number:
                                    ------------------------------

and if such shares shall not be all of the shares purchasable hereunder, that a
new warrant of like tenor for the balance of the shares purchasable hereunder be
delivered to the undersigned.

Date:
     -----------------------------

                                       NAME OF WARRANT HOLDER



                                       By:
                                          -------------------------------------
                                          Name:
                                               --------------------------------



                THIS NOTICE OF EXERCISE SHALL NOT BE GIVEN EFFECT
               BY THE COMPANY UNLESS THE HOLDER OF THE UNDERLYING
                 WARRANT HAS PROPERLY COMPLETED AND SIGNED BOTH
            THIS NOTICE OF EXERCISE FORM AND THE SUBSTITUTE FORM W-9
                                ATTACHED HERETO.
<PAGE>   9

                               SUBSTITUTE FORM W-9


Under the penalties of perjury, I certify that:

         1.       The Social Security Number or Taxpayer Identification Number
                  given below is correct; and

         2.       I am not subject to backup withholding either because I have
                  not been notified that I am subject to backup withholding as a
                  result of a failure to report all interest or dividends, or
                  because the Internal Revenue Service has notified me that I am
                  no longer subject to backup withholding.

IMPORTANT INSTRUCTIONS: You must cross out #2 above if you have been notified by
the Internal Revenue Service that you are subject to backup withholding because
of under reporting interest or dividends on your tax return and if you have not
received a notice from the Internal Revenue Service advising you that backup
withholding due to notified payee under reporting has terminated.


SIGNATURE*
          -------------------------------
DATE
    -------------------------------------


* If a corporation, please sign in full corporate name by president or other
authorized officer. When signing as officer, attorney, custodian, trustee,
administrator, guardian, etc., please give your full title as such. In case of
joint tenants, each person must sign.