First set your spring rates at 9.0 and 6.0 (front and rear respectively) stabilizers at 4 (each) then tune from there.
As for the braking I set mine at 12 (front) and 10(rear) The Zonda C12s is quite fast, brake much sooner (before the rumble strip begins)using "poor man's ABS" (quickly on and off the brakes) and you can get back on the gas sooner, coming out of the corner. Hope this helps.