This is AirWolf 3D version I bought for my Shelby. I works and as you can see the battery is put in from the bottom as you expand the split. I like your concept, if flexibility is an issue maybe a few angular gussets on the outside perimeter would help without going crazy. Wish you a lot of luck...
That is truly very impressive. I bought mine from Airwolf 3d as it was the only one offered, but yours is a very clean look and maybe lighter. Nicely done.