I was helping my dad build his over the weekend and we were talking about how to load the battery.

I was thinking about having half the window being removable so that the battery could be slid through the side. The window could then be velcro'd back to the side of the plane. I like your idea for making a hatch that is removable.

What battery are you going to use? We have not settled on one yet. I think he has a 7 cell Nmhi 900maH to try at the start. He is using a 480 and will try a 6X3 prop to start.