0.05 mm 44 awg is right 4500 - 5000 turns should get you in the ball park. No wax bath if you want to stay vintage original. Most of the old Höfner pickups are starting to fail. I think the flux they used is eating the copper away. If they have the alnico magnets they sound pretty good if you over wind them a bit. The red tape is a real pain to get off and the colour goes all over your fingers. Surprisingly the tape is still sticky after all these years. Have fun.