Pat, I have some un-braced and braced pics on the first page of my website. The only full draw photos are on the gallery page, and takes a bit longer to load since the pixels are a bit high.
The first photo on the main page is how I think you would want your bow to look un-braced.. You don't need it to be a hard curve to make a difference. I make plenty of light 40-45# 72" ipe and bamboo bows like this mostly for competition 3-d archers, and these guys have helped me with good feedback and the realization you can make a light weight longbow out of heavy wood perform well..
I think if you can floor tiller the limbs so they could bend into the r/d shape you it will be easy to heat it up and tighten the clamps on the form..
You have 3 nice pieces there, I'm envious and plan on getting a bunch at mojam this summer..
Rich
www.richardsbowyery.com