If all coils have the same have the same magnetic polarity and have yellow/left - black/right lead wires, then they are all wound the same way, so the blended positions are two singles as a pose to an RWRP parallel pair.
considering the DCR you've measured from the other two pickups and the size of the coils, they're pretty likely wound with 43AWG. Looking at the coil wire wrapped around the flatwork it's wound with poly wire, couldn't tell you if is single build or double build. You could try to measure the existing wire with a micrometer, to determine the build of the coating, just be super careful not to squash the wire.
As for wind count, I'd guess and wind it up, then measure, adjust as necessary, cut off and then rewind again to get it close. When you first strip the original wire off, have a look at how it's been wound, how tight/loose the wire is and how much scattering, cause that makes a massive difference in fender-ish single coils.