Need a car radio, amp, and sub(s), best setup for 500 USD?

Hi

I have 500 dollars to purchase an entry level car stereo, amp, subwoofer, and box for my vehicle.

Any helpful suggestions or setups you guys could suggest?

Help appreciated

- Connor

P.S. I'm just starting to research and look into car audio stuff so I am a novice.

sub: http://www.sonicelectronix.com/item_8363_Kicker-CVR124-07CVR124.html
amp: http://www.sonicelectronix.com/item_42353_Lanzar-OPTI500X2.html
stereo: http://www.sonicelectronix.com/item_33388_JVC-KD-R320.html
box: http://www.sonicelectronix.com/item_19279_Sonic-Sub-Box-1SV12-Black-Carpet.html

possibly this?