You have never built a camera before and never used a 8x10 view camera before? These 8x10 pinhole cameras are available for less then $200 USD. I don't see how one could build a Hobo style camera for less than that if you don't have a lens and have never built a camera before. If you like it you could then adapt a lens to the camera, which might be easier than making the whole thing from scratch.
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