If you'd like nice wiring check out Knuconceptz, here's there amp kit page
http://www.knukonceptz.com/productMa...llation%20Kits
I called up because what I wanted wasn't listed quite the way I wanted it. I added more of their speaker wire, one double rca cable (did front/rear preouts) and one for the subs. The amp wiring (4 gauge) Then 80 feet of speaker wire. I had very little speaker wire left after doing all four and the sub. All the wiring was awesome quality and in three years, I've never had a single bit of dimming etc. That's running everything off one amp.
As for install... see if your amp needs a certain orientation, if possible invert it and mount it below the rear deck. Keeps it out of the way.