Where are the tweets located? Are those 4's in any type of enclosure, like at least a foam baffle? If you haven't already you can pick up foam pods that are made for applications usch as that that will probably make those 4's sound a bit better.
If you wanted to make the tweet slook more integrated it;s VERY easy to mold those tweeter cups into that panel. If you want more info. I can send you pictures of how I did nearly the same thing in a maxima with some Focal tweets.
Here is a pic. of the pod. I simply fiberglassed the provided cup to the factory panel. Normally I would use Vinyl or paint on a pod such as this, but the person I was doing the install for wanted to costs down. He chose some grey grill cloth that I think looks marginal, but he was happy with it. I would have liked to paint it with some texture spray and then color match it to the interior colors.
For the left panel it was a piece or cake. The right one is going to be fun. For the left panel i just cut a whole with the dremel and the right panel i did the same, but it is a little harder because of the way it is shaped. But use your imagination.
Your car is awesome, i love the color scheme...Wish i could get my combo which is exactly the same as yours GC and Agx's with b13 fronts not to sound and act like a mack truck though....Those kickpanels you have, i still have my eye on them, im going to have to breakdown one day and just buy them.....damn being broke!!