I actually stayed with this setup for awhile. It wasn't until a friend offered me custom 3 way setup a-pillars that I decided to start working on the audio again. At first, I just added some Tang Band 3.5" Bamboo drivers to the Hertz 165XL components and hooked up a JBL MS-8 for the processing. The Tang's and the Hertz tweeters were being powered off of the MS-8 while the Hertz HDP4 handled the power for the midbass Hertz drivers in the doors and the JL Audio W3 sub.
This setup was ok but the tweeters and mids really needed more power. Then...when the car got wrecked (thanks to a guy running a red light and t-boning my car)...insurance was covering new speakers. That is when things got a little nuts and here is now the car is sitting now.