Looks good dalancroft I went through a similar thing getting green on my accessories, so I feel your pain.
Small mod tonight, added a gopro mount to the front splitter and usb power, plus a rubber boot to keep the USB power dry and protected when it's not plugged in. May put in a waterproof connector on the usb connection later to neaten it up, but this will do for now.
It was night, can't believe how dirty it looks under the flash, when I had the shop light on it, it looked clean, lol, so ignore the dirt.
Great Idea never thought of that really. I run a Go Pro in same spot just closer to grill and a 360 camera up high on tail section. Would love to do this also. How long of a cord did you get and where did you connect it to for power? Pain changing batteries all the time lol.