BL set-up help

[BrianG]

Your budget of $350 is possible... maybe. What speeds are you looking for? Higher speed (over 40mph) is gonna need power and the MM can't handle the voltage or current for really high power/speed systems. That kind of stuff can get expensive.

For a budget system, the MM ESC and a 8XL or 9XL would be the thing like Gmaxx said. Watch temps and gear appropriately.

However, you are already running 14 cells. The newer batches of the MM will only run up to 12 cells. But, some people are saying it handles more voltage after the newest firmware update. You might want to check more into this. 4s lipo is ok though either way.