sorry to hear of your troubles.
you might consider just ditching the 4x5s first
and stash the 5x7 and a few 4x5 + 5x7 holders and 4x5 reducing back
in a box under the bed. who knows maybe you will find a way to keep the LF
maybe rotary in the shared space ?
you'll probably enjoy the freedom of your MF but miss the tonality of LF ..