You have three choices. The first choice is an installment contract. The attorney will draw up articles of agreement for a set period of time which can be as an example ten years at a set interest rate until the principal balance is paid. He will set up an insurance escrow and tax escrow. I have always had recommended to me to have a memorandum recorded showing the contract sale and preserving all priorities. I always try to use reliable title in Pensacola and Navarre for the title work. I do not feel comfortable recommending a lawyer, and their rates vary, and you should call informed and ready to take control of the sale.
The second choice is to have an attorney to prepare a deed transferring the property to the buyer. Then the attorney will create a note with a principal amount and an interest rate with monthly payments to you. He will create a mortgage and record it on your property. I have sold things this way, but I am not a bank, and there are regulatory rules that made me nervous. However, if it is properly prepared, you can assign the note and mortgage to a bank if you need quick cash.....of course they will want a discount.
The third choice is a lease with option which should be drafted by the attorney to protect your interest. I like this option as a seller because I am not transferring my equitable interest in the property to somebody until I am paid.......choice one transfers equitable interest, and choice two transfers legal interest. The third choice you are just a landlord who is allowing the buyer to gain equity over a certain time period and that equity can be applied. I did a three year lease with option where I put a price which was 10k higher than the market at the time, and had them pay $300 a month over market rate and applied that money to the option, once they had made all the 36 payments, I gave them the additional credit for the 10k bonus.....with over 20k of option payment, the CPAs who were renting from me got their financing.....however the commercial building was up to code and close to the valuations we used.
I would recommend going to reliable title and talk to them how much they would charge for a contract sale, or if the could recommend a reasonable attorney who quote fair fees. I have some recommendations, but I learned a long time ago not to recommend realtors, accountants, or lawyers......you can turn a friend into an enemy by bad behavior by the professional. I hope this helped.