No, if the landlord has not received the security deposit yet, which appears to the case if you have no recept for it (or at least that will presumably be the position the landlord takes), you are not entitled to possesion (entry and use) of the premises yet, since you have not fully complied with your lease obligations. If you break into the unit--and that is what have a locksmith move you in without the landlord's consent is; breaking into the unit--you will be committing a crime and could be charged; you could also be sued for any damage done and to reset the locks; and the landlord will be justified in not renting to you.