Just a quick comment on the last picture in post #10
I've had good luck with Deans arming switch (receptacle) mounting using these:
http://www.aztechaeromodels.com/inde...product_id=424
(they come in different colors of anodizing)

You can get them much cheaper at Hobbyking as well:
http://www.hobbyking.com/hobbyking/s...h_T_Plug_.html

Makes replacing the Dean connector (if necessary) very easy; no need for Hysol

Also the fuselage cutout is the same size as an Anderson Powerpole housing
http://www.f3aunlimited.com/power-un...g-plug-housing
should you decide to change in the future