>>4308978Dev stuff is cheap, and it is easy. A 4 reel patterson tank will do 6 sheets with a mod54 4x5 holder. B&H sells the combo for $86. Changing bag is 30ish, chems are like 60ish for probably 100 sheets, and misc stuff is another 50ish, maybe. You can use an 8 reel patterson if you need to 12 sheets. Home dev can bring your costs down to less than a couple dollars per 6 sheets. Everything except the chems is interchangeable with color dev. Just different chemistry.
If you don't mind weight and a little bit of extra cost I would suggest a sinar p1 or p2. It's an incredible monorail camera with fully geared movements, and the system is fully modular with many accessories. Any other monorail camera will be more than enough for architectural.
Field cameras with very wide angle lenses can be tricky because of how close the lens is to the film plane, so you need to be sure to account of that if you're choosing a field camera. Usually can't just swap out a wide angle bellows like on a monorail.