Not sure about the mount. Probably have Mike do something special to be strong and as light-weight as possible. For batteries, some type of cell with a REALLY good C rating, like FP or something like that. Don't need high capacity per se, mostly very high short-duration power that is as light as possible. If I can find some decent prices on 1/8" thick CF sheets, I might re-fab some of the existing Al pieces for weight. I want strong, yet durable. But it has to be pretty too.
I'm open to any suggestions if anyone can think of any...