Start here:
http://www.petitrc.com/reglages/xray...sXRayT2009.htm
Touring cars really do need proper setting up, on a setup station, so ask someone at the club to do that for you. If you have a setup station, I suggest getting someone to show you exactly how to use it! The Xray manual is considered a superb reference for setup in general.
I'm pretty sure ride height should be a minimum 5mm.
For radio setup, set your D/R to leave you enough lock to make the turns. To calm down the steering more, set some negative exponential (set on the radio) on it.
On the ESC, turn all the punch and timing settings to minimum if the car is too quick, and you can learn about the midrange of the throttle band with negative exponential on that too.