You can, if it pleases, easily add a few extras to that GG1, Dan. Adding a rear headlight will make it possible to give them directional control. If you decide to go TMCC, the TAS electronics has outputs for 2 coil couplers. For the cost of a used remote and base it might be worth finding out how civilized command control truly is.
That blasphemous GG1 shell I painted up in Warbonnet garb is a Williams unit I purchased without the guts. I'm staring enviously at your running gear....exactly what I need!
Bruce