before you invest your money i think you should look into other companies that will offer you a better bargain for your buck.
(Head Units)
Alpine-
Pineer-
Eclipce-
(Sub)
FI-
RE-
Dayton on parts express.com-
go to soundsolutionaudio.com take look around at there selection of subs as well
(Amps)
Sundown-
Cadence-
zed-
look around @ woofersetc.com
they at least can offer you a warranty for if you blow anything up since your'e new.
you can also find some good bargains here on CA forum
look before you leap