I've got some decent pioneers in the back and 2 90 rms infinitys 6000CS (w/ tweeters). I was thinking I'd have a 4 channel amp going to my 4 speaks and a seperate 1 or 2 channel amp going to my sub(s). Any other suggestions?

 

Do you have a good headunit to start with?

Amping the speakers will get MUCH better sound out of them. Having a sub will help since nothing else can handle the low freqs like they can.

 

i have a decent aftermarket pioneer head unit. Going to keep that untill I get everything else done. So I should definitely get a 4 channel amp that can handle the total RMS of my speakers or the speakers peak power? I think I'll get the 4 channel amp first then the sub(s)/amp for sub(s) later..