Dunno. Throw the paperweight parts away and re-evaluate.
Polaroids - gone.
220 backs - gone or will soon be
Ever use a metered finder on an RB? Not to my liking - gone.
Then realize the light seals will probably need redoing in the remaining backs.
If the bodies were wedding photographers tools, they can be quite worn. The fiddly little parts of the rotating back plate can need a bit of coercing. Worn interlocks are a PITB.
Chances are at least one lens needs a CLA.
If it were my 450, it would wind up looking more like a used 4x5. Or a new to me M series lens for my 8x10.
And yes, I have a ProS with all those lens and more. (50,65,90,127,150SF, and 180).
Just my opinion,
tim in san jose