Very cool! I've been considering a 4" rig myself. How do those 1806s handle and do you plan to mount an HD cam?
I have tried it, but I really notice the extra weight.
I am planning to buy a Mobius Mini and make a 30deg titl mount for it. That should fit.
The 1806 are at it's max now with these props. When using two blade props I can run 4S but with these 4 blades, the motors get very/too warm using 4S.