Advice for new setup

[Izso]

if it is me, i'd just match the amps with the speakers max wattage & use a pre-amp to control the sound output & it will help to maximize ur crossover output, unless u r really 1 hella hardcore ICE person, then i'd go wit sifu Izso advise

That's one way of doing it. But most pre-amps out there are not that great. Unless you get a good one like from Helix or Audiocontrol, then you might introduce aeroplane noise into the setup. And those two brands aren't cheap.

Actually I just had a thought. Keep the current 2-channel to power the sub. Buy a component set for the front and one 2-channel to power it. Case closed.