Budget Build Questions

Ok so I am looking at doing a budget build in my 04' Double Cab since I do not plan on owning the truck more than 3-4 years.
I think I am going to go with:

Hifonics Zeus Series 6.5" components in the front
6.5" Zeus Coaxials in the rear. [FONT=Arial,Helvetica]
Hifonics ZXi-4410 4-channel 440W amp or something similiar.

I am not set on Hifonics I just like to have the same equipments all the way around. 1 already have an 8" TREO sub (perfect for my 01 ext. cab Frontier) and plan on putting that in the double cab just for some added bass (not expecting too much but should add some lows). The question wouldn't it be easy to just purchase a 4-channel amp and run the front components on channels 1 and 2 and bridge channels 3 and 4 and hook that up to the 8" sub. I will run the rear speakers to the headunit so that I can fade them out some. To do this I need two sets of preouts correct?

Thanks guys
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Yes you need two sets of preamps. Sounds like a nice system. I found some good used stuff for my setup and saved a ton.

 

Actually, you don't NEED 2 sets of preouts, but it would most likely work better that way. You COULD just run a Y-adapter from each single output thus making it a dual output RCA jack.