Thanks john, Sounds like the pack I have is right for this setup.
Being narrower than the AA pack it allows airflow down the sides and out the exit cooling holes in the fuse.

For the price of the lipo I can buy 2 more of these 2/3A's.

Slow charge'em all over night and 3 packs will be plenty of flying.

I will have to let it cool between flights but I really opened up the cooling holes in the foam and it seems to be running a little cooler.

thanks