@Paul:
I will gonna test on slippery clay as soon the track is a bit dried after the winter so any advice for a starting setup for low grip is helpful.
Comparing Brian's an Dan's Setup I cannot see any direction how to set the car as nothing on both cars is the same beside misc.

.
Beside the fact, that LOSI and AE shocks are in use the geometrie, caster, mounting positions of shocks are completely different.
That means for me starting at zero for low-grip.
I am using Lipo with the intension to avoid as much weight as possible. I don't want to stiffen the car for jump-landing because of the weight.
Thanks
Norbert