Well the grain filling went good, ended up using two coats. I sprayed the sand and sealer when that was done. That kinda surprised me at first - I guess I was expecting something more like a high-build primer, but what came out looked more like a thick, semi-gloss clearcoat. I've never worked with it before this. Cool stuff, since the sheen helped reveal any imperfections:
I had one issue with the veneer on the back @ the upper horn. I'm not sure if it was the block sanding thinning it too much, or if the stripper caused it to lose adhesion in a couple small places - almost like bubbles, or hollow pockets under the veneer. I carefully slit the veneer in those spots with a thin razor, worked in some CA glue, and pressed it back down with a plastic spreader (resistant to the glue). This seemed to work out, and just required a touch of filler in those spots. Whoops!!
After leveling the front, back, and sides I sprayed the first primer coat. Here it is now:
Hey - it looks just like it did when I started!