I hope you'll enjoy TC, which is my favorite class and is sometimes criticized for bad reasons.
You'll NEED ( I mean REALLY need) :
A good bodyshell (protoforms are the best , hands down. Don't bother trying anything else.) Find a mazda 6/speed 6 or LTCR, and be careful to mount the wing 8 or 9 mm further than the rear bumper, that's how it works best. Never underestimate the importance of the body.
Good shocks: I don't know about the car you have but most RTR cars have crappy shocks which are not even worth trying for TC. The tamiyas are the best, but if you want purple ones the Schumacher are good, or those that come with the hotbodies cyclone. You'll thank me for that piece of advice.
3 degrees rear toe in is good, 6 or 4 caster is good but 2 mightbe a bit agressive. Set the ride height 5 mm front, and 5.5mm rear.
the gearing is very different from drift, so ask on the Novak thread which FDR to start with your 8.5.
2 degrees of camber front and rear should be good.
be careful with you droop settings. Usually the front A-arms have a bit less travel than the rear ones. Be sure to set it symmetrically left and right.
other than that : good tires (rubber ! foams are the worst PITA ever, believe me), buy a few springs maybe, and that should be good.
also : set you rear diff with almost no grease so that it is very free and put some heavy grease on the front. You can even lock it but your front dogbones won't like it.
All of this are starting points, of course.
have fun ! and sorry for the approximate english