!/8 scale Brushless speed control in a 10th scale?

[MudFlaps]

What are the improvements over the MMM? I am an occasional racer ( read once a month), Would I need the Pro?

What 10th scale motor do you suggest to use with the MMM...does it have to be a Castle? From what I hear the SC10 is easily overpowered..so I guess something on the lower end of the power band. I guess I should mention At this point I will only be using 2s lipo..is that enough power for the MMM?

Thanks for all you help