I was thinking about getting 2 BTL 15's, i already have 2 2400 kinetiks, 2 h/o alts, and 2 ma audio 4000D's. I want to know do u think that would be a good set up, should i change the amps or what. Also which would would be better between the 15's and 18's, and how should i get them loaded for daily use.