Your mids and highs setup is a complete mess. I'd recommend just selling stuff and starting over and get a 4 channel amp with at least 125+ watts per channel.
If you can fit 8s in the front, cut and fit 8s. This is my buddy's jeep patriot doors with basic cuts with a knife. Get a quality pair of tweeters and put a lot of power to your front stage. Forget the rear, thats just power wasted and sound quality/loudness down the drain. Completely stupid waste of time and money. You may think it helps but dude take it from a guy that actually NEEDs his music way louder than you can ever imagine, Rears are garbage.