return the JVCs, and pick up some Pioneer Revs. One of the best coaxs out there. Give them around 50 w of clean power apiece and they'll do pretty nicely for you.
I'd just pick up a set of revs and a decent 2-channel amp, I have an eclipse EA2212 for sale if you're interested. Brand New. Nice little amp, and would be just about perfect for the revs