what i would probably recommend is for you take take your time on your system and not rush into it... plan each peice carefully. Start with your deck and work back, you don't want do have to make your system more than once. so make sure that each piece of gear that you purchase is of very high quality...not lacking any features that u may want in the future (eg.in a deck- Mp3, Sub Out, Stacker Control, 24 bit DAC, 4V Preouts etc) these are features that i know i personally cannot go without. It may cost you more in the longrun but it is the type of system that you would never need to upgrade; the type of system that you can take from car to car.
Option 1-
Decks: Jvc Kd-Lh2000 RRP $749 should get discounted to at least $650
-24 bit Digital Audio Converter
-Front, Rear, Sub Lines Out
-Flip Front
-Mp3/Cd/Cdr/Cdrw/Tuner
-Remote Control
-Stacker Compatible
-MultiColour Display
Splits: Brands such as "Boston Acoustics", "Orion", "Phoenix Gold"....- All big name American brand speakes will have a nice hard hitting bottom end, with a crisp top end from previous experience... so i highly recommend brands such as the above examples for your speakers.
Amps/Subs: as for these... the same as the above mentioned works well here too...American names....
this will turn out to be above your budget... but i suggest you spend that money on your deck and splits first as Stage 1. Then Stage 2 is ur amp/sub/rear speakers.