Yeah, 8 would have probably worked decent, problem is I only have various 6 cell packs and a few lipos, I haven't run electric stuff in a few years- besides my planes which is why I have some lipos, so I need some new cells/packs. When I bought the astro flite motor, I picked up a 6 cell 3700 pack, so that should work decently. If I like it, I may have an 8 and 10 cell pack made up for it also, we'll see how it goes today.
Joe