Red One with lens was about 13-15 lbs although I don't remember a Red One used on an octocopter. Red Epics were out by then which brought the weight down to under 10lbs.
Chain saws without blades are around 10 lbs?
Chain saws without blades are around 10 lbs?
Regarding the amount of force required to cut things: they are only cutting snow and small tree branches.
I think you are being overly paranoid here.