I'll give you my setup and maybe you would like something similar (I'm 17 give me a break I know it's cheap).
2 Alpine Type R's = $164
2 Pairs of Pioneer speakers = $70
Hifonics bx1000d running approx. 1000W at 1ohm = $101
4 AWG wiring kit = $40
Sealed box materials = $30
RCA Signal converter for HU = $20
Total= $425 ($355 without speakers, but just a sub and amp don't equal a "system")
And I couldn't be happier with how I spent my money.