I think you are on base and have revealed the problem with a lease/option contract. Its just that...an option to buy. A lease/purchase is a different contract wherein the buyer agrees to purchase the home at the end of the lease period. Usually part of the rent is used for downpayment. Basically, its just a delayed closing. However, in the years and years that my broker and other experienced agents have worked these contracts almost never work. There are too many ways for both buyer and seller to get out of the deal. And, think about how many things can happen in a year to your buyer. A lost job, job transfer, death in the family, etc. My advice would be to either rent it and look at the property as a rental, if you can. Or, sell it outright and be done it.
Best of luck!
Prudential Tropical Realty
A lease option is this: a person leases a home with a rental agreement and somewhere out there if he chooses to enact a purchase of the home, you then come to sale agreement w/price at that time, based on market conditions at the time.
A lease purchase is a situation where you reach an agreement on a sales contract ahead of time, for a purchase sometime within the time frame of the agreement. Some of your monthly payment can be contributed toward the down payment (purchase) of the home.
Of course, many of the items in a sales contract can be negotiated, so don't be shy about asking for what you would like to have, and you and the Purchaser/tenant can have a very beneficial relationship.
This is a situation that helps to sell a home and helps the buyer especially in a situation where they buyer starts a new job, and when credit is tight, that can hurt the buyer (employment history counts on credit score), making it hard to both sides to put together a satisfactory agreement.
Good Luck!!, feel free to contact me if I can be of any further assistance.