I am also interested in a 3D Hobby Store plane, the Velox, and was looking thru various setups and plugging them into MotoCalc.
My EXtra 300 SHP setup has been posted many times.....Scorpoin 3026-10 APC 13X6.5E or 12X8 and 4S or 5S A123 2300 cells.
For most with the Velox I believe that
Scorpion 3020-12 ,APC 13X6.5 ,4S A123 would be a better setup. That is what I use in my Extreme Flight Yak 54E.
Charles