Owner Financing a property with a note on it

[Dustin McClure]

I have a home listed for sale/rent in a slow market in West Texas. List price is $269,000 or rental of $2,300 month. I am at the top of the market for this location. I owe around $240,000 on it. All realtor/property management fees are being paid by my company due to relocation.

Received following offer today for Lease to Purchase:

10% down

15 year note (goal to refinance in a year)

Payment from $2,200 to $3,000 monthly.

My thinking is in order for this to make sense to me I need $3,000 a month. Of that $3,000 $2,400 would go to the bank and I would pocket $600 a month plus the downpayment.

I would rather the couple just lease the property at $2,300. If I decide to sell they would get the first option. 

Overall, my concerns are that if my mortgage lender learned what I was doing they could accelerate the note; which would put me in a financial bind. I do not know if the acceleration clause is in the contract I signed. 

What are other concerns that I haven't thought of? What would you do?