Hold off buying anything till you can get accurate weights and can move some stuff around and drain your tanks. That sounds incredibly high! Something's not right with the way you are loaded or you're getting a story. Once you determine accurate weights and move some loads around I believe 800# bars are fine.
Read up on some of the threads about weighing your AS and come back with the figures and we, collectively can figure this out.
"If the women don't find you handsome, they should at least find you handy." - Red Green