Jeremy, the 9L would spin 30k rpm on a 3s pack, where the 380 6l does 53k on your pack. with your current gearing, the 9L would get you to 30mph.
a 46 tooth pinion calculates to 53.17 MPH.
your current setup, calculated to 53 MPH by the way.

I'll post the vid here in a few minutes.