Looks superb Mike! I would view this thread and contact beachbum as he was making hanging mounts. Maybe you can get some ideas from him. Also, Jbrady is a master DIY.
Finnex Ray II / FugeRay Hanging Kit
Also, I think your next purchase should be some nice lily pipes!
I messaged him about the brackets. Another buddy of mines said he purchased some for $10, so hopefully I can do the same too!
As for my lily pipes, i finally measured them and got a measurement of 1/2 inch (half an inch). What size lily's will fit? is it 13mm?