I would not go too low with punch setting on the ESC. On an LRP at least you need to have min. setting 4 to have reasonably linear throttle. Lower settings will make the throttle feel like you had negative expo on it.

On the gearing you should try to be quite close to the sweet spot.

I would suggest testing with mildly lowered throttle EPA setting. If that feels OK then you might increase rollout too while also keeping an eye on the temp.