If you are really planning on doing 3D with this plane, then I would definitely not rely on one battery. I'd opt for a pair of batteries, which is exactly what I am using on my Venus II pattern plane. I have a pair of 1200 mah NiMh packs in that plane.

Believe me when I say that it saved my plane one day when I found one of the packs had gone bad during a flight. If that had been the only pack on that plane, well i would have had to pick up the pieces.

It is easy to do and the pair of 1100 mah packs are light enough that the gain of the redundency outweighs the added ounces for that second pack. You can either install the batteries each in their own channel slot on the RX or Y cable them to any channel on the RX. And, one voltwatch in stalled either on a vacant channel or Y cables to another channel. And, of course, one switch per battery pack.

That enables full redundency and might save the plane during one of those difficult to recover from 3D maneuvers... which, according to Murphy, will be the time when a pack will fail on you.

Just my thoughts on recommendations for your battery choices.

CGr.