Thanks guys.
Maff, there really needs to be balance in the car. The airdam and holes in the hood provide fairly good front grip. The wing was mostly for braking balance and REALLY helped there a lot. The splitter wouldn't have helped with that and I don't think it would have helped as much as the A6s did for grip. In the end there wasn't enough time to test every possible combination so I had to use my best judgment. I could be wrong, but I like most of what the car is doing.
In reality, what I need are really good shocks. The KSports are doing an admirable job for the price, but a set of good shocks would make a huge difference in both the brake lock-up and ulitmate cornering grip because in both conditions I think I am losing contact with the road surface because of small bumps.