Holy fuck you're friggin huge dude.
Dont fuck around. Get an all-metal binding at your h/w. Seriously. I'd also go with either an FKS or Look Pivot 18 or an STH16.
Be patient and look around. They're for sale on here all the time and I think I got my 18s from 1337 for like $200 and some naked pics of B Arthur so it certainly can be done.