ok so here's what I'm thinking...

Pioneer head unit Pioneer - 50W x 4 MOSFET Apple® iPod®-/Satellite Radio-/HD Radio-Ready DVD Deck - AVH-P1400DVD

Front Speakers Infinity 6030CS
Rear Speakers Polk MM6501

Alpine Amp 5CH Alpine PDX-V9 5-channel car amplifier — 100 watts RMS x 4 + 500 watts RMS x 1 at Crutchfield.com

And Subs Kicker 07DCVR122 Ported enclosure with dual 12" CompVR subwoofers at Crutchfield.com

Should I go with a farad cap of some sort etc?
Anyone have a recommendation on gauge of install kit?
Install parts for head unit? (I don't care about the on-Star)