Great budged build and tutorial, thank you!
My pleasure! I hope it'll be helpful to some folks.
To me if i can sell my old 5", don't blame me if i will copy it exactly as it is ;) Anyway are you sure that powering that fc with lipo voltage won't overheat it?
This is my 3rd build using an Omnibus board and they've been wonderful. While this is a clone it powers up just fine and I see no issues. They're made to handle up to 4S lipos and have a built-in 5v BEC. My favorite FC hands down.
If you're concerned you can always power it with the 5V BEC used to power the camera, but then you'd lose your voltage reading over OSD.