Hi Leo, welcome aboard!
Looking over the past year's attendance, I find three other 928's running, each in a different class:
1985 928S, Coolhand Rossitto, #230, II – Apr A/X only
1986 928S, Greg Phillips, #928, JP – Jan A/X only
1991 928, Mark Matsumoto, #448, KSS – All A/X except April and May
I suggest you forget about doing any suspension work other than what is required to pass technical inspection. The goal is not to be fast out of the box, but to learn as soon as possible. Some of the best advice I've gotten is to keep the car as plain vanilla as possible in the beginning. That way you learn about driving at the limit while those limits are low.
You'll get a better sense of "getting it right" when you're in a stock car
It's much nicer to lose control in a stock setup at 40 mph than a bad-ass setup at 70 mph
You know that increases in performance are due to better driving, not go-fast parts
You save money by not getting - er - go-fast parts
When you truly can out-drive your car in its stock configuration, then you should consider upgrading. Until then, just drive.