Sorry, no video, but with full flaps it slows down a lot more than you'd expect from a 20 pound 82" span warbird.

Very controllable and probably moving at a "fast trot", not a "walk".

My G-45 weighs 5 pounds with the 1.5" spacer plate and Bennett mount, plus the added 16 ounces of lead on the mount to get the plane to balance.

Even with the G-62, you're gonna need a lot of nose weight, unless you move the elevator servos from the stabs to the front of the fuselage.

I wouldn't worry about the weight. It'll do just fine.