I'm running Carbotech pads on the front and rear of my 85 PRO-7.
I have never used the Hawk pads but some of my competitors do and have seemed pleased. I believe they go through more rotors per season than the drivers that use the Carbotech's. I usually go through 2 sets of rotors for a full 10-12 race season. Last season I used XP-10's up front and XP-8's in the rear with a brake bias system. I did flat spot some of my tires but that probably was a little late braking. This year I'm going to use XP-8's up front and AX-6's in the rear. This will provide a little less intial bite and the pads will last a little longer.
Just make sure to alter your stopping points until you get used to different pads whether manufacturer or compound.
Duane