You could also extend the fan wires to take power from the rx. That way the fan runs all the time instead of only after temos get high.
My MMPro's never go above 100f, and I've used all sorts of motors in 1/8 cars. Castle/neu 2200kv, 2650kv, and 1512 1800kv and many other motors on 4-6s lipo.
Thomas G
I have the cars that I really wanted before I got them ;-)