At last! The console is together and working!
I mounted the pedalboard electronics on a spare bit of pine, and hung it on the frame:
The pedalboard is rather noisy and needs refelting, but I think I will defer that project and be content with my clunky practice machine - lest I get so obsessed with building that I forget my initial purpose: an emotional-spiritual musical outlet.
I'm currently working on the Bach E-flat Prelude and Fugue ("St. Anne"), and Mendelssohn's first Prelude and Fugue, using the organ bundled with Hauptwerk, as well as the free "Enigma" polyglot organ.