It hasn't been updated in a while, but this is/was my system:
That was in my Ford Contour, but when I got the Mazda3, I stepped down to a 2400 on mids/highs and put in Polk 5X7's. IIRC, I was gonna use the Diamonds in the front too, but crossover placement was an issue - those things are big! And I didn't want to cut up my car right away trying to get seperate wires for the tweeters and mids through the door jambs - it was hard enough getting ONE pair 16GA wire in there.