Good luck with the painting, Mark! I hope you find something helpful. I have an Paasche H airbrush, which isn't really fine-tuned enough to do this kind of work, especially in 1/72, my scale of choice. I managed to do it about 30 years ago, but recently it has defied me.
As for "tail-sitters," I've done a couple of B-24's over the years, and gave up trying to load them with weight in the nose. I ended up drilling a little hole in the rear fuselage, and inserting a stick pin as a support to keep them upright.