[jhautz]

I'm also planning on running a single pack. I have an enerland 4350mah 5s pack that I was planning on running. According to my estimates I figured that that should be just about enough, but wasn't sure. I am going to buy a 2nd pack and was thinking that I would go w/ the 5000mah, but didn't want to take the extra weight if I didnt need to.

I am guessing that the 5s pack I have will be more voltage than I really need, but I am going to be running a slightly lower kv motor than you so the speeds should be around the same as yours. Maybe slightly higher.

Sounds like the 4350mah will be really close. I guess I'll have to take it out for a practice run and time it to see how long it runs before I buy another pack.