The ZW should be fine BUT have it checked out. The cords tend to become brittle and cracked. The track you have should also be fine with some TLC. Clean it up with some scotch bright and clean and tighten the pins. Check to make sure the center rail insulator is still good. Super O is not made and can be hard to come by. Menard's makes new tubular track still but there is plenty of fine older tubular out there at train shows and even Forum Sponsors. Check out Tin Man 3 Rail.