The Flybaby was designed by a model builder.His name was Peter Bowers. He made it very easy to cut for a full scale. He copied and simplified a homebuilt that a friend of mine owned. . I think his full scale plans are still available. One of its attributes was it built like a model airplane.
I built and flew a Balsa USA kit of the Fly Baby bipe. That kit has been reissued. Why not contact them and see if they have the parts you need?

Pete had a set of biplane wings and a set of monoplane wings that he could install or change for whatever mode he was in.