[lincpimp]

I think 2s is a good battery size to run in the ste. I used a neu 1509 (4500kv) with a MM. Not much real estate under that body, so a smaller esc and rec are a must. Not sure if a sidewinder would do with hot motor and 2s lipo. You could go with a 3s lipo, but I would try to keep the weight about the same as a 2s hardcase pack, as that seems to be about the optimium weight. If I were to do it again with new equipment (I had everything laying around) I would go with a 3s 3000mah 35-40c lipo, something around 3500kv for the motor, and either a sidewinder/external bec of the MMPro.