hello
you might start small and work your way to big. bostick and sullivan ( suppliers of alternative process chemistry )
http://www.bostick-sullivan.com/cart/48/wet-plate-collodion-kits/
used to sell KITS for tintype work, which included a kodak box camera. they enameled / lacquered ( or something )
the inside metal so it would not react with the silver plate. you would be surprised how LARGE some of the old roll film
box camera images were, and the beautiful thing about starting with one of those cameras is they are a bit more portable
and coating the plate is easier sometimes if you use a small camera.
something like this:
https://www.ebay.com/itm/ANTIQUE-ca...749381?hash=item2f156a46c5:g:qrUAAOSwryBafP9f
doesn't cost very much, has vintage optics and if your chemistry won't corrode the metal parts.
you can find bostick and sullivan's phone number on their website ( see link ) maybe they can let you know
the type of camera they used to ( or still ) sell.
have fun !
ps. there are people who also use stuff like HOLGAS to shoot tintypes with, in the end, a camera is just a box