Any commercial stripper you use will seep into the foam and kill your airplane. You are better off to water/wet sand it back to primer if you must strip. Almost as much work as building the jet in the first place. Been there and done that. I once used a technique on a Byron F-16 that should work on this airplane too. It is a spin off of the brown paper bag covering method I use to make "Lost Foam" fiberglass parts. I covered all the foam surfaces with silkspan tissue applied with titebond glue, watered down and colored with food coloring so I could see what I was doing. This provided a barrier for the next step. I applied one layer of .5 glass cloth using thin super glue spread with my hand in a plastic bag. God the fumes were awfull and the glue was $$ but it worked. I painted the jet with K&B Superpoxy so I suppose you could use any paint you wanted.
Good luck!
Rob