Looking fantastic, Skip! It looks from the pics that the balsa is of very high quality, too.

Are you familiar with Worldtex from Horizon Hobby? It's rebranded Solartex, I think, but a bit cheaper. I've used it on a few models and it really looks like painted fabric. Goes around wingtips like silk. It irons on like Monokote, but does not bubble or sag in the sun. It would be perfect for an early '60s vintage design like this.