ok... for SQ.

tama yung plans mo... seps for front, coax for rear and an amp. you may also need a smaller sub that is designed for SQ. you may also need a tweeter.
kicker brand. targa would also be a good fit.

sa amps, mb quart. di ko lang alam kung swak sa budget mo.

antay pa tayo ng opinions ng iba dito. since ang sounds eh to each his own yan.