sorry to be one of the people who suggests you buy a 4x5 camera ...
i would suggest getting a toyo or similar view camera and using a roll film back ...
NOT because i am trying to convert you to use large format film .. BUT because with
a 4x5 camera, you will have the ability to use a group of lenses that will give you more coverage
for your MF negative, AND you will have a larger ground glass back so you will
have a bigger pallet to compose with.
there are a lot of cameras out there, rail cameras, and they will allow you to
twist your bellows into knots ( if you want ), they will allow you to use longer lenses ( if you like long lenses ) ...
you will need recessed lensboards to use things shorter than "xx mm " depending on what your needs are.
make sure you get something with a bag / balloon bellows or the ability to change them from straight accordion to bag bellows
because with shorter / "normal" MF lenses you will need to be free of the constraints accordion bellows serve up.
have fun !