Setup Help?

[Cricky]

I'm had some slight experience building an audio system for my last car, now I'm doing it all over again for my 04' hoe. Here's What I'm going for, However I lack the funds to build it all at once.

Polk DXI6500's in Front doors, w/ Dynamat
Polk DXI650's in back doors
This amp, powering those 4 speakers.

After getting all that, I'm going to add subs later. Probably two 12's.
I'm planning on getting a mono-block amp to power those.

I'm just wondering if anybody has any suggestions or recommendations for what I'm trying to do.. Will two amps pull too ******* the battery? Should I get a capacitor, anything like that?

 

[The 'ER]

Get a cap. For how cheap they are it will prevent the awful dim/bright headlights as the amp pulls especially with 2 twelves. We all laugh at the little rice burners around here running lawn mower batteries with bouncing lights.