Its going to be an everyday setup. I like the LOUD BOOM BOOM of SPL but really want it to hit well across the whole spectrum and clean. Im looking to spend up to 400-500 range for the amp, more if you all think that maybe needed but in that range if possible . I am going to do the big 3 in my car, but don't know enough about audio yet to figure out what i should get for the others. As for space, i can go the whole width of the trunk which should be around 44" or so side and maybe up to 2 feet give or take front to back.