So here are the final pics for this build; first the 305:
Next, the shabby 302 in the '60s tuscan scheme:
Finally a family shot, on the approach to the Delaware River bridge:
My Nikon captured the red color much better than my iPhone, but I should have used a tripod for better focus
Like most projects, this took way longer than I had expected. One surprise was that Z scale (905) couplers resulted in the units coupling too close together; I wound up using 1016s. But they're done, so I can move on to some freight car projects that have been waiting on the bench.
Thanks for all the comments up thread - I appreciate them!
Frank