Another thing that would need to be defined before a bet- standing or flying start. HPVA records have separate categories for those. Flying start would be up to a 15 meter push by up to three people.

I'm still very interested in how this experiment works out for the OP. I suspect his size will be an advantage in a standing start, but a huge disadvantage gaining very high speed.

If we were doing a betting pool, with honest timing, I would bet on 20 mph for 1K on a standing start, 35 mph flying. I think he's going to fry himself very quickly on the standing start.

This is upright without fairing.