Now that the tunnel tubes were in place I could start the seat mounts. I opted for a roughly 10 degree lay back which was where I set all my seats according to my angle finder. I ditched my idea for a one piece mount after seeing that the mounting locations on the seat don't sit on the same plane.
I added a seat tube below the rockers side of the seat to bridge the gap.
There's still about an inch gap between the seat and main hoop X in the event that it ever collapsed and deflected towards me.
I've also got about 8 inches between my head and the nearest cage tube. If I hit my head on a roof tube I'll be dead already from my neck stretching that far.