Well if you are having issues finding an esc to use, as you probably know I have been using the Futaba MC230cr and it has given me 100% zero issues running 6 cells. I also have the motor soldered directly to the esc. Check my old micro build thread if you haven't btw...heh.
The user "homer" of the Homermade r/c bodies fame actually suggested my setup to me and I went along with it.
(btw is he even still making bodies.??)
As for how to mount the batteries, since i'm running the Penquin LM chassis, there are screw-in battery plates that the chassis uses and I simply "shoe goo" the battery cells right to that plate. When I need to change batteries, 4 screws and the battery is out.
http://www.penguinrc.com/products/hpi/p3500lm.html
Have you posted some photos of your micro stuff that you have? I would be interested to see the two chassis you have.
Oh and as for calling up Novak, all it takes is a phone call and ask.