I have two of the rifles, one parkerized, one still in it's issue Remington hot oil blue for almost all parts except the receiver.
Parkerized is fine as most of the rifles that saw service were damaged badly (snipers were targets ala "Saving Pvt Ryan") and returned, repaired, and hustled back to the lines because throughout the war they were in short supply.
Weaver K4 is a nice choice for shooting and I've used one of those on my parked rifle in preference to the pretty crummy Weaver 330c/M73b1 issued in the first go arounds of the rifles.
If I were you I'd find a C stock. The after arsenalized stocks did not carry all of the Remington factory inspection marks, and some have been observed on original arsenalized rifles with no markings whatsoever. These generally show signs of having been belt sanded in a hurry which would seem to follow with the late war urgency that field units put on the rifle's return to service.
Even if you aren't able to bring it to full 'correct' configuration it's going to be a high demand item, or even the way it sounds like it is although it would cost a buyer a big chunk to get it presentable and convincingly correct. The laid over serial number is enough to put a good premium on the rifle as-is.
The K4 used 7/8" rings, right? So what rings do you have for the Redfield mount, if it's still present?