From the vid it looks like you like to be very powered up on shorter lines. I prefer being slightly under powered on small kites and a surfboard. (20+ knots on a 18-20 meter lined 5m C with a 6'4 surfboard are the conditions that make me smile.)
I wish I could go shorter than 18m as I love the direct feel and added speed of the kite, but the power stroke on tiny C kites is just too weak. I've found I can't go shorter than 18m on my setups.
Looks like fun tho. If I owned a TT and a kite bigger than 7m I might try it.