Very cool setup. Perhaps a WR-69A would simplify your setup a little bit with it's built in bias supplies.
I was going to go the RCA route too, but fate landed some other gear in may lap instead.
Currently, I'm using a Hickok 615 sweep/marker generator, Kikusui 1120 frequency counter and an HP54600B scope. I also have a TVG-2 which has some issues but does look pretty cool I think
Most recently, I picked up an EICO 369 I'm currently restoring. It a more modern and compact design the the 615. I'm really curious to see how it's post marker-injection and built-in demodulator technique works.
