well, at that current draw you're looking at 1/0 gauge power wire easy, depending on your front stage power. How much current are you going to be drawing for your front speaker amp?
Definitely 1/0 upgrades for the magic three wiring (do a search). Deep cycle would be practically mandatory, and an auxiliary battery off an isolator might not be a bad idea, as you'll probably be competing with this setup, or might in the future (don't know why else you'd be doing all this //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif)