Nice to see more people getting into CNC for RC cars!
I agree with what everyone has said, you wont be popping out parts like shelling peas. Having said that, don't be put off either - its a hell of a lot easier than doing things with a manual mill or hacksaw/file old-school methods! You can make cool stuff that is IMPOSSIBLE any other way. I have 3 years experience with my CNC X2 conversion now, this is the only CNC I have experience with. All the cnc mill work for my custom 1/8 buggy was done on the X2, and I have a couple of manual lathes.
Good luck!