Thanks for the link to some good reading. Looks like all attempts were E-power conversions, not the way we are going. Our wish is to convert to RC glider for some summer competition made possible by the advent of altitude telemetry to get fairly equal altitude launches.

Yes, the plane has swept back wings and dihedral could be added with little effort. The frame is fragile but firms up pretty good with strapping tape spars added to the wings and a popsickle stick joining spar.