Trying to figure out what to do to my system next. Right now I have two 2008 15 inch Kicker L7s powered by 2 Hifonics Brutus Bxi 1610D amps, Infinity Kappa 693.11i rear speakers, and Infinity Kappa 50.11cs front speakers powered by a Pioneer GM-D8604. With a cheap Pioneer AVH-190DVD head unit...