I'll get my RHR setup posted in the setups section soon, I've actually started running a fair bit of weight in the car recently as an experiment - still not sure just yet
Usually I run the Trishbits front bulkhead (~40g) + brace (~7g) and antisquat/toe block (~28g) everywhere. At RHR I also had a Rudebits 72g under servo weight + 66g lipo weight.
As Chris has mentioned the carbon rear arms are a must on the B4.1, the new plastic is a bit too floppy there IMO. I've tried both back to back, the carbon arms just make everything better in general - more grip, more consistent and much better through bumps