I won't say it can't be done. And won't get into engineering aspects like ductwork and such. However, if you get along with his parents now. I suggest you keep it that way. I do NOT recommend ever living with someones parents no matter how good you get along. Its a bad bad bad idea. Go live on your own. Don't screw up the house. And once you inherit it, you will thank me again and again. By the way, what his parents say when you 2 get Wild!!!