If you had your measurments from before, thats best to have until you drive on them and see where you stand. I got a set of QA1's from JLws6 and I drove on them AS IS and i noticed that the rake is awesome but there is some air dam rubbing on hills or steep incline changes,
Not a big issue but I need to crank them up about 1"
As for track settings, you could set them like a 90/10 shock to start and then play with them from there.
You want it rise quickly but stay up so the weight transfer its consistant. Having it bounce back too quickly will unload the rear. Then depending on the rest of the set up, the shocks may need to be staggard but again, thats why they have testing and tuning.