I think the jumping potential of the kite will be huge.
I played with the settings a bit too. I tied another knot on the back line pigtail up about 6 inches and that really helps turn the kite.
I tied also an extra knot further up on the back line and it worked.
I was out also yesterday on the 12m X-Bow in 12 gusting to 15 miles wind
and 149 mutant type board for low end.
I was able to go upwind better and jumping higher than one of my friend
who was on a Caution 16m and only 20 lbs more.
I agree the jumping potential is huge and better than some other flat type of kites,
especially if you already nailed the timing and technic, like me on the Raptures.