Spent a bit of time seeing how the hoops I bent so far fit, seems like it should work out pretty easy. 2 full 10'6" tubes, and 1 24" tube per hoop. with 18" of tube out of the ground, this gets me right at 100" of headspace in the center.
This seems to have refueled my interest in finishing these up a bit! Maybe this weekend I'll see what I can accomplish.