jamais
Established
I think your suggestion is very reasonable. The 75 is definitely for sale and the M4-P I will keep forever anyway (at least for decorational purposes) 🙂Before you sell off the Leica M, buy a Bessa L and try it out. They aren't very costly. Then make an informed decision for yourself.
If it were me, I'd use the Bessa L (or Leica CL) as a dedicated body for the 25 (I have the 21), use the M4 as a dedicated body for the 35 Nokton, and the SLR for any longer lenses.
Sell the CV75 for funds to buy the L and a bunch of b+w film.
My latest idea is buying an L (or T) for the 25 and a C Sonnar for the M4-P. Maybe that would move me from gear talk back to photography.