Oh, document *EVERYTHING* and keep *EVERY* *SINGLE* SCRAP* *OF* *PAPER* related to this sale. You will need it within the next 5 years. Statistics show that 98.7% of installment sales fail with the seller having to foreclose on the buyer and repossess the property. So make sure you have your ducks lined up for the future legal action you'll probably need to take sometime within the next 5 years.
