I spent some time during weekend to put elements together. Pi motherboard is replaced and TTL2Ethernet converter is removed. I did also short test if everything works fine after changes and seems there are no problems with a new setup.
I need to modify only bottom plate of F450 frame to fit raspberry correctly on place, screws do not fit bottom plate well and I need to modify it. Simple dremel tool will help in easy way to modify this PCB frame board.


I do not see any more huge modifications for this configuration, maybe I will need to mount HD camera additionally but right now I do not think about it.

The most important thing for me is to finish this configuration now.