I bet the T22 is sweet spot size.
I've been experimenting with 90-105-120 board sizes. It's still too early to make final conclusion.
But with 90 I need to have power to allow direct pop up on 633 wing /80kg . Otherwise it's torpedo. With 105, it's possible to do one sine of kite while board plows along sub surface, to get flying on wing. 120 is much more forgiving. All sizes feel the same in the air.
The 90 will fit in a hockey bag for travel. Others I still have to fork out the 80-100euro each way fee..
So I'm still considering making a 120 split board. Making non split layered balsa board now, but think I can make a split one pretty easy. Have an idea how to do it.