Deductions & credits

Thanks...I'm more confused than satisfied.  The agreed upon sale price is close to market value, and the rent paid is also more or less market value.  Daily interest IS listed in the contract, as is a requirement for two larger cash payments to be considered down payments, that came to me, the seller, and were not held in escrow.  The agent will not receive his commission until closing.  So, the question is, which is the safer bet?  To list it as an installment sale, or as a rent conversion?  At the time of closing--hopefully early in 2018, I will still qualify for the $250,000 capital gains exclusion based on the 2 out of 5 year rule--unless that no longer applies on the rental conversion.