Truggy's are so cool to drive, you'll love it! IMO a 5-6s setup is better for truggy's. I'd go for a cc/neu 1518 1800kv or 1520 1600kv if you can find one. That and a MMM, and 6s. Or a tekin combo, I'd go for the 1700kv and 5-6s.
I run MMPro(with constant running fan), 1518 and 6s 40C 4000mah in my truggy. Working so far
TG