Well for that much money we can do quite a bit. Here is what I would recomend.
Speakers: Edi 6500 - $250 (Basically the same as CDT HDs only way cheaper)
www.edesignaudio.com
Sub: 11 Ov.2 - $140 (Is on pre order right now so I can't see anything coming close
to it for the price)
www.edesignaudio.com
Amp: nine.4 - $185 (Good amp, and you are already buying everything else from them
so it might as well match)
www.edesignaudio.com
Wires - $20 - 4 gauge w/ a fuse block and 2 sets of RCA cables or one set of 4 channel RCAs. Can be purchased from
www.knukoncept.com , walmart or ED has some wireing options but they're a bit more expensive. I'm sure I might have some stuff lieing around as well.
Headunit: $195
This was the best featured headunit I could find for under 200 from a reputable manufacturer.
http://www.ikesound.com/product-product_id/2883
Total comes out to 790 plus shipping and install materials on that deck.
Install: I'll be glad to do it for you for free, since I know you. Haha.