If your looking for a cheaper option than that esc by LRP.
You can also try the Novak module #5470, #5471, #5472.
They can be used with any esc to protect the circuit and battery.
Only $40, if I had to do this I would just go go GTB/17.5 setup
but that again is another $250 out ones pocket, and in the spirit
of mini riding I think the stock esc is fine.

Dynodan22