How long are your springs? Where is your lower perch on the threaded housing?
FYI, I have 10" 350lb springs, Ground Control under mount camber plates, lower perch almost all the way down, I'm at about 6" at the rocker panel.
BTW, you can run a school with a stock suspension. They don't care how fast you are, they care how consistent and safe you are.
Also, if you look at the eBay pictures of the Mookeeh coilovers, they have pictures of the coilovers with stock strut bearings and their camber plates. You can see how much suspension travel you lose by running them.
There's a good writeup of various camber plates on
Rennlist