I need help in choosing which amp I should use in my Escalade. I am currently pushing 2 Jl 500.1 amps to 2 s12 l5 solo baric subs. I own two 4ch amps. One is a Jl 300.4 and the other is a kicker d x400.4. Which amp do you suggest I build my interiors around? I plan on going components in front and coaxial in rear. Please help, this decision is breaking me.