Kingy - at 5'10 and 200lbs, I am too big to make it a practical option!
A couple of chums play with them but they are of the racing snake hipped variety!
Aerobatic - very. The legality of such in the UK, I do not know but have seen one displayed in the States.
200mph seems plausible - you not interested in a dark blue Notts one are you?
Stik