Given the current state of the market (exceptionally high prices, with exceptionally low inventory), I would get an honest, knowledgeable, and DISINTERESTED appraisal of your property (location, schools, condition, appeal, etc.), your financial health/goals, and then weigh that with your expected return from the various exit strategies available to you (if you own it free and clear you can use any ES you want).
If the house is in good shape, is appealing, and can be made "Doll House" ready for minimal investment, I would SERIOUSLY consider cashing out (sell it outright for full retail to someone for all cash/bank financing). If the house has a defect (rough condition, unappealing, bad drainage/pool/neighbors/lot/etc.) Owner Fi might be the way to go.
If OF is your ES of choice, I STRONGLY suggest you:
1) Auction off the down payment as your primary consideration for the sale (20% MINIMUM + closing costs, etc. - someone with 50% downpayment and 550 FICO beats someone with $2000 down and FICO of 800),
2) Use an experienced Real Estate attorney or an RMLO to draw up the docs,
3) Do a real closing at a real title office/attorney's office,
4) Have an experienced Real Estate attorney check all docs (especially loan/CYA docs) for compliance before closing,
5) Talk to an experienced insurance agent who specializes in OF insurance and a) force the buyer to maintain the recommended insurance as per the agent's direction and b) you carry your own insurance, and
6) Hire a professional mortgage servicer to service the loan (and escrow, if that is the recommendation) and give them the explicit direction that they a) are to aggressively collect mortgage payments, late fees, etc., b) report the buyer's monthly payment history to one of the big 3 credit reporting agencies (make sure the buyer knows this), begin foreclosure proceedings the first day allowable by law/contract each and every time the buyer is late with a mortgage payment (that'll only happen once or twice).
This is what we do on our OFs.
If there is anything else I or my staff can do to help you grow your business, please let me know.
-Greg
Greg Wilson
The REI Mentor