I decided to change the physical arrangement of the wiring for the triode/pentode switches a bit from what was described in the manual. Rather than have the two resistors flying over the switches, I put them in low, with the connection to the terminal strip being made by inserting the lead through the hole where the lug is 'riveted' into the phenolic strip. The one that connects to the switch terminals closest to the strip is dressed in parallel with the strip, positioned between the switch body and strip and connected to the 'upper' terminal; the resistor between the far switch terminal is horizontal, and goes straight into the 'lower' terminal on the strip.
Additionally, I routed the wiring up and over, on a more direct path to the terminals on the tube sockets, rather than dressing it around the outside of the chassis near the filament leads. I think this was a shorter route, and doing this let me use most of the cut off pieces of wire from the OPTs, keeping the color scheme intact. The only wire I had to add was the solid blue piece that ran from the 'upper' lug of the terminal strip to V3-3 on the left and V4-3 on the right. Note that the wiring is mirrored on each side - the Grn/Wht wire goes to the 'outside' switch terminals on both sides, and the Grn wire goes to the 'inside' terminals.
In case anyone wants to try it, here are some photos showing the position and lead dressing of the resistors, along with the wiring, and a diagram detailing the connections.
Resistor installation. Note that the bodies of the resistors are even with the 'rivet' holes in the terminal strip, and the leads are bent upwards at an angle to the level of the switch terminals:
Resistor detail shot, showing angle of leads to switch terminals:
Switch connection detail - screen taps from transformer go to top terminals on switch, screen connections to tubes go to center terminals on switch, and plate connections go to terminal strip. Note that solid color wires go to inner and top terminals, and striped wires go to outer/bottom terminals. Screen and plate wires to each tube are dressed together:
Overall pic of screen/plate wiring to left tubes. I figure routing them 'overhead' like this will get them close to the bottom of the chassis and keep them away from the rectifier/heater wiring:
And finally, a diagram of the connections to the switches and terminal strips: