I wouldn't trust published flange distances for large format lenses. It's better to check the focus of your lens and camera combination on a ground glass. As for setting the lens to the hyperfocal distance, that distance depends on many factors, such as the aperture used and the acceptable circle of confusion. The latter depends on the most critical use of the image. A large print demands a smaller circle of confusion than an internet image. Photography can be simple, but not if one wants to compete with those who work hard and work smart at it.