I think you forgot one item in your setup, the battery, From the picture i think you have a 2s setup with 18650 cells, and the discription in the video says 3300 mAh, but which ones?"
"Looks like your just trying to find a size (current and voltage) and application for your esc. I don't really care as long as i can finally buy an esc with good canbus support for arducopter&PX4 that will give (or has the potential to give) the…"
"Using a 30A esc does not mean you are consuming 30A, it only means that the ESC should stay in one piece until 30A (with cooling) not that it actually does 30A at full throttle.
What PWM controls is Duty-Cycle. (normally, not true in governor mode…"