Well,
The motor is a 6XL 2800kv so it looks like I can't use it on 5S. Even running it on 4S would be pushing it. It looks like selling it might be a challenge... I think I'm going to go with the MMM Medusa Combo and run it on 5S.

I'm starting to think I should just keep the RC18T and save up for a ERBE or just go straight to a 1/8 Truggy Conversion.