My humble $.02
RENT! RENT! RENT!
Theres no way that if you believe most of what we believe(on this board) that you could even propose the question without already knowing the answer. It is so dangerous to buy a home at this time, especially a 800k home with only 5% down. Rent for about 4-6 years, save up at least 20%(20%now=160k, in five years it may be only 80k) and pay much less for your home. If you decide to move, you won’t kill yourself.
