Damn, I'd tell you all about wiring if I didn't have to go to work right this minute. I just laid down a whole bunch of wiring in my Prelude (non-ghetto style). I hope you're a quick study.

Anyway, if you're used to having your good sound quality coming from your rear fill, it may be weird switching suddenly to just front speakers. And then you'd have these rear speakers just laying around. My advice is get a 4-channel bridgeable amp (MTX, or Eclipse EA3422 for $200 like me) and hook it up to all four speakers. Score some fronts for cheap. Take the time to wire it properly. Then if you don't like the bass you get just from amp'ed speakers, you can take out the rears, bridge the rear channels on the amp and use them for a sub. Either way, the ONE 4-channel amp will always serve you well.

Dan