[ChazA]

There are no defined control board mounting materials provided in the kit.

In the past we have used Lexan successfully. 1/8" is usually good. It is not too heavy, and mounts well. I find wood is a little to heavy unless you find some super light weight stuff.

Do not use metal or carbon fiber. It is conductive and is just asking for shorts... We have made that mistake in the past.

I do not have any good size ideas. Pick out what hardware features you are using, and lay them out on cardboard or something to fins the best sizing.