This makes for attractive, easy reading. If your uncertain of the exact spelling of the name, or precise title, then call and find out. Your time is to valuable to squander on letters that are tossed out unread and cast negativity on your company. In a letter longer than one page, don't end a sentence at the bottom of any page except the last one. Break in the middle of the sentence.
Readers demand completeness.
Don't give it to them except where you want it. If you use a P.S., make sure you load it up with power and apparent spontaneity. The P.S. is your leaving piece, and a weak leaving piece is a weak residual image. Don't let ego or uncertainty push your course off the intended target. And don't cheat with the answer just because at last your letter is finished.