Les I'll do all the testing u suggest on some scrap balsa to see the outcome. I used the Pactra brand of paints in years past, and they always worked well, and were fuel proof.  I hope they have a clear spray.  I'm going to run a thin film of epoxy to the nose and engine compartment to give it some extra protection.  I have installed the new fuel fill fittings, and they should keep fuel from spilling onto the finish.
      Acerc thanks for the link to the website for the sandpaper I'll definitely buy some. Once again, my thanks and appreciation for all ur suggestions, and help.  Merry Christmas to u all Dean