I guess I'm thinking the same as Dave.
Go for the Infinity's, unless you'd rather upgrade to some components.
Ditch the idea of 6x9s in the rear deck. Way too much of a hassle for marginal sound at best, especially considering what you listen to.
Toss a single 10" or 12" sub in the trunk and power it with the RF amp.
You'll be a happy camper with some nice tunes.
