John, that's lovely. I can't read the tires' labels (generally I hate over-logo-ing, but I advise RH to make their labels bigger) but are your tires Naches Passes? Extra lights? I've put almost 200 miles on the Naches Pass EL's that I installed on my June 2020 Matthews custom to replace the Elk Passes, and they are wonderful tires; really, even taking into account 1/2 lb additional weight on each wheel compared to the Elk Pass's, they don't seem to roll any slower.
If your tires are indeed the Naches Pass, question: could you get fenders over the tires and under the brakes on that frame?
Also, what are those cantilever brakes? I am not merely curious; I really like my Tektro CR 720s with Salmon (Shimano cartridge) aftermarket pads, but I do get mild front shudder, and I am open to alternatives.
My first Riv road custom was a late 1994-ordered, early 1995-delivered custom road bike to replace my 1992 XO-1; I told Grant, "Make it better than the XO-1." He replied, "Oh, it'll be better." And indeed it was, designed around the original All Rounder but with tightened angles and road tubing; very nice. The 2 later custom roads improved even on this one, and my current Chauncey Matthews 26" wheel road bike for AM and fixed gear drivetrains takes it further, to the apotheosis and ultimate fruition and summum bonum and Holy Grail of Grant's initial, road-biased development of that original All Rounder.