Will, I wish you would write more, I really enjoy reading your posts...
If you would put your design on paper, then post on the web, I would join the line-up to cut some of the pieces for it...maybe use some eastern white cedar, which would be light to ship.
I don't see why a few of us couldn't cut a few timbers and then send them to a central spot somewhere to be test raised and then send them it on to somewhere it would be needed.....