I actually had an adapter made to mount the pentax lens to a sinar lenboard. With the use of a sinar P2, auto aperture shutter, and a sinar 75Lv back, I should be able to use lens. I just received the rear adapter for the digital back so I have yet to use this set up, but hopefully, it should work.
I was just hoping there was an easier method without having to pull out or carry along the 4x5 every time.