Building a new camera! and darkroom

Actually I'm only modifying a darkroom, it's going to be a lightproof tent I've ordered that allows me to shoot tintype photos and develop them all in the same dark space. I'm doing a lot of research and consulting with some great engineering minds to find a way to make a cost-effective 8x10 format camera that will have fine focus adjustment knobs and be capable of also accepting larger size tintype "film" (sheets of metal or glass), like 11"x14" or *gasp* 16"x20". Here are a couple of my initial models, mostly for figuring out the focus adjustment from inexpensive parts that are also very precise and machined.

And even though I'm trying to be very cost effective with this build, I also want it to look nice, so I may use some exotic wood. Even though it will be mostly enclosed in a black tent (except the lens, of course).

Here are a couple tintypes I took several months ago during my first crack at wet plate photography.

I'll post my plans once I've decided on the specifics for the camera/darkroom build, as well as some images of the original 10'x10' darkroom tent and camera.