planning a new system, 05 silverado

Hello all,I'm planning out a new system for my '05 Silverado regular cab. I currently have an Alpine CDA-9847 deck with Rockford Fosgate P162S front speakers. I can get great deal on an Infinity System. I was considering KAPPA62.9I 6.5" front speakers. KAPPA462.9CFP 4x6" plate rear speakers. A KAPPA124.7W 12" subwoofer. In a custom enclosure. For an Amp I was considering an REF5350A 5-channel amp. The whole system will cost me just over $300.00 all brand new shipped directly from Infinity. Any thoughts or suggestions.

let me guess, you work at best buy? hey, if that's the stuff you can get a good deal on then go for it. infinity is usually good but personally i don't like their subwoofers. infinity amps are pretty good when they work right and you dont abuse them at all. personally i'd go with the alpine amps but keep the infinity speakers up front and ditch the rear speakers since you have a single cab truck. the infinity sub should be fine too if you dont plan to run a bunch of power to it.