In your situation, I'm wondering if it were feasible to just clamp softtop hardware to the top of the cage so that the canvas would indeed match the roof line...
As for the softtopper, I'm casually interested, and my interest will increase once this goes beyond n=1...
Yeah, that would be doable too, only thing is I would have to come up with some kind of custom clamp thingy. The Boat bimini top hardware, other then having to ream out .033 thousands is working perfectly so far. It's cast 316 Stainless Steel so it will never rust and it's polished to a mirror finish so it looks pretty nice too. The EMT tube is dirt cheap. Only thing I'm not sure of will be the cost of the top material and labor to make it. IF I can get this just like I want it I will still consider making them in a for sale situation. Only time will tell.