1. land contract, or contract for deed, 對屋主最有利, deed is not recorded at closing, but hold in escrow. 2. 可以寫5年ballon 到期必須付清, it is a must, you can always negotiate new term at the time, if you don't like the buyer at the time or property appreciate much, you can kick the buyer out if he/she can't get new loan somewhere else.