The System that comes with the RTR will be perfect until you want to move on.
It's a 4pole Reedy. It's a "good" motor. Used one in my 2x4 for years now and competing.

Oh, and by move on, I really mean to a good ESC with programming. That motor is a kick butt motor.(stats speaking) Maybe not that stupid top speed cushion you guys want, but it will roar.