Linc, looks good so far. The way you have your batteries was the method I initially wanted to do, but some people don't have nearly the lipo choices that you do!
I'm sure you'll be done far before I am because I still have to special order the "SE" Medusa motor (still undecided if I want a 50mm or 60mm motor), the ESC (MM and BEC), and fabricate the parts I need.