Mini pins are good, but if your club allows it, stretch 1/8 foams on the rims and apply additive. For oil, go soft, but not too soft. 27.5 on the front and 32.5 on the rear should work. Stand up the shocks a little, and because of the roll, put 2° camber all round. It works for me! If you want more advice, try this:
http://www.petitrc.com/setup/losi/se...ld_Area512012/
Or if you want more setups, this:
http://www.petitrc.com/setup/losi/Se...TwentyTwo.html