If you can live with f9 as your maximum aperture there are any number of unloved process lenses going for a few tens of dollars or Euros. G-clarons get the most press, but the older single-coated APO-Ronars are also a great deal, and the less sexy process lenses like Saphirs, Ultragons and Lustrars cost less than postage in many cases.
60s era plasmats like plain, no-suffix Symmars and Sironars are easy to find at good prices, but they may be too large for your lensboard and bellows, and the longer lengths haven't quite dropped down into my buy-it-and-see-what-its-like comfort zone.
The real sleepers in this focal length are the press telephotos like Rotelars and earlier model Tele-Xenars. These were made for exactly the application you have in mind, but tend to get spurned these days because of their limited coverage.