giga crusher brushless

[Finnster]

I'm assuming this is for a crawler?

The ESC should be more than OK no matter what you do, I have a gen pro and found it pretty smooth up until the batts were well dumped.

I don't know what the motor is, don't even know where you are looking at this combo. I would think you would want to aim for a motor with a pretty low kv value & with your low gearing. LMK if I'm misunderstanding something (ie crawler etc)