You are right Brian, i have been shoting with a cambo legend for years, the wider lens i owned for this camera was a 90, not so dificult to focus and compse, but a dramatical diference from 135 and 210, when i needed wider lenses to shot ship interiors, i needed to buy a silvestri S4, 47XL and 58XL, interiors of the kind of luxurious ships y use to shot have a lot of dark reflective wood, so most of the time where phtographed by night, the best way i find that worked for me was to compose with optical viewfinder, focus estimated and set it with the scale in helical focus, check with pola and if al was right, shot film, i think in a sunny landscape, there is much more light, but still dificult to focus and compose, specially for db tolerances.
with the first db i owned, Sinar 23 light, on a Fuji 680, i found that the focus where very difficult, so i wanted to be sure, live view was a must, so when i began to use a 23hr (multishot) i needed to go to P3, with digital lenses, this worked fine for years.
the last to years, i have been using emotion 75, not so good to focus and specially, to tilt right at first time, now, my emotion75 is back to factory for upgrade to live view.
for the ship interiors, now i´m using a silvestri bicam with 24xl, still the same way as with 4x5, optical viewfinder, estimated focus, preview in laptop... but it will be much much better with live view.
if you are serios about this photographs, with extreme wa, a rigid camera with helical focus and sliding stich back is the way to go, if you just want to play, best dont, spend money.
good luck
Jaime