With this bulkhead done, I've run out of bulkheads I can make while waiting on the spar. F2 is the bulkhead between the firewall and the instrument panel. The oversized cut-outs are to make wiring and installing the avionics difficult rather than impossible, So that's nice.
I can theoretically build the seat bottom ribs, but since they span the distance to the wing spar I'm still awaiting, I'd prefer not to. I'd like to field verify the actual distances before I start cutting and bending. More than likely, my next steps will involve the wing ribs.