This is just a 'rest of the story' note (tip of hat to Paul Harvey) I thinned the second coat of epoxy much more than the first.
After sanding the first coat, we put the seocnd coat on. Spread easier, of course, and today when I looked at the walls and doors, the epoxy haed dired to a nice gloss. After sanding, it should provide a good surface for paint...thanks for all the good advice and hand-holding, folks!
Jim