Ask a landlord-tenant lawyer and get answers ASAP
Normally there is no contract until you agree on price. Often this is negotiated by experienced local landlord tenant counsel. In many instances 36 times the difference between market and rent stablized rent is a good starting point. If developer/owner has a need for the premises, can get much more by holding out and negotiation. I would keep negotiation verbal and if and when have agreement, have a contract prepared by owner, reviewed by your lawyer.
Let me know if that is clear and acceptable.
Kindly rate me positively.