17/60 should be close but still leave a little room so you don't start gear bound, Provided you have tires real close to match track conditions when you practice I'd start around 7 lb range, for the race are you running 55s ?
Can't help with champ gearing -- Ken's recommendation looks to be close. With 55s start off with:
7 8
X
8 8 IF it's not bouncing, you can go up from there. If the car is bouncing at all, stay at 7/8.
If you're on 33s, start out with higher air yet.