Alright you guys convinced me
All of my kit is from the mid-1970s, and part of me wanted to update to later versions, but I can always just add bits and pieces that I want to upgrade. I'll just start with the body and then eventually the backs. I probably won't do the lenses because they work fine (heavy focus throw aside) and I plan on eventually getting CF lenses down the road I imagine.

Thanks for chiming in everyone, I always appreciate the honest feedback I get here at APUG.