[MetalMan]

For 4s Lipo, he could go with a Lehner 1940 6t or 7t. For 5s Lipo, the 1940 8t would work well. If he truly is power hungry, then 6s Lipo with a 1940 10t. For a controller, the Quark 125 Monster would probably be the best out right now. This setup without batteries would run him $565, but is top-of-the-line. Depending on the actual batteries, $200-250 is a good target price range for Lipos.

It's possible that a 1940 would just be too much. If that's the case the 1930 motors in similar KVs would work well. In order from 4s-6s Lipo, they would be the 1930 8/9t, 11t, 13t.