Burkhard..
I was planning on using a 5 or 6 cell, 4500-5000mah LiPo pack. Of course, 4 of them, one for each motor. The packs will be easily accessible as they will be installed between the engine mount supports, under each V8 engine. This is another engineering problem I have to work out once I focus on that area again. Right now I am working on the wing panels. I am installing all the hard points for struts, landing gear, etc. I should be covering wings soon.
Cheers, Sal