Check out Mike's in Carrollton. Texas is a fairly large state so it would help if you let us know around what city you are near.
The TC4 is a pretty old chassis (but still good), you might want to look into VTA as a good way of dipping your toe into the on-road scene.
Lastly, if you are going to run in a class you will need a different motor. You'd be reallllllly hard pressed to keep up with just about any decent brushless setup IMHO.