How did this end up going? I have a zero mx frame and was thinking about a similar set up: RV-160/leaf/Kelly. Also, any more info on water cooling the RV, I didn't see anything about it on the site. I hope this project worked out!
Thanks for the reply. I definitely will be posting/learning much more before I'm in a position report back. At first glance it seems like the smaller motors are more "cutting edge", but there is a gap from big RC motor to something more powerful (~35+ lbs and "old school design"). But I think...