ZX5FS: setup advice needed for a medium bite, rough clay track

[rcpower]

not a lot of animo in the suggested thread, so here we go again...

can one provide me a good starting point for a FS on a medium bite, rough clay track? I will be running proline caliber tyres(control), orion 45c lipos with a orion 7.5(or 6.5 if needed) motor. The track is rather tight and technical.

I also like to know if the pinned slipper is a good possibility in this case?

Another concern is weight: currently I have 38gr under each lipo, is that any good?
Or can I better put it in the spline of the car? or perhaps do both?

thanks in advance.