I am running the following on a medium sized, low traction, bumpy track at cold temps (<50deg)

Front:
Gray Spring
1.6 piston
30wt oil

Rear:
Green Spring
1.8 piston (drilled)
25wt

No ballast and Reedy 5700 saddle packs (266gms) with the spacer forward (batery as far back as possible. I am also running RPM Arms and silver rear sway bar only.

The car runs great in this set-up and I have even carried this to a higher bite, warmer track with a tire change and it was fairly good with a little push.

Tires: I was running Panther Rattler rears and Double Dees in front on low traction with good feel. I would like to try Panther Raptors all around. On the higher bite I was running Panther Switch rear and Bobcat fronts.