Dave pretty much nailed it with his post. I'd like to just wrap it up in a nice package for you:

Car: 22T

ESC: Tekin RS (great little esc that is good for beginners as a set it and forget it item and can grow with you)

Motor: 17.5 Tekin Redline (I usually try and match the motor and esc to a brand as it seems to keep things simple if you have any problems, plus its a "stock" spec and you can always get a new stator to go faster later)

Servo: The one Dave mentioned is good, I just happen to prefer Hitec and would recommend the 7965. Might be a little more but they tend to draw less power.

Batteries: Check out Gens Ace (hobbypartz.com) or Turnigy. I got some Venoms to start out with similiar specs to what you mentioned and was blown away but what a higher C rating could do. Plus they are usually alot cheaper and will last just as long (durability and run time wise) as the Duratrax.

Radio: can't fault your choice! Get what's comfortable for you.

Welcome to the hobby!