This evening I spent all my time in the workshop sanding with a random orbital sander, and progressing from 80 through 120, 180 and 240 grits. It’s now ready for finishing!
Every piece has been across the bench from left to right (being sanded on the way) then back again (with a different grit). It took a while but will be worth it. Now I’m waiting for the finish to turn up that I ordered.