possium8

I am getting a stampede on an FLM extended chassis and I want to set it up with paddles and be primarly a dune toy. So I'm not sure what motor setup would be good for this set should I go 540 size can 4 pole 3800-4300kv or should I go 550 can size/ 1/8 scale electronics in the 2000-2600kv? I want speed and to be able to run it at least 30 min-40 min with out over heating the electronics.