Gary, I've never tried the Cantrell wound pickups so I can't comment on them. I've read a lot online about the old Superhawks, and several people have reported good success with the Dimarzio SD pickups in the bridge, and a PAF type pickup in the neck.
Earlier this year I replaced the stock pickups in an Ibanez PS10 (Mahogany body with maple top, rosewood fretboard) with the Seymour Duncan Hot Rodded Humbucker set. (SH-2 Jazz in the neck, and SH-4 in the bridge). I couldn't be happier with them. They might be a good choice for you to read about because they have a nice smooth, warm tone. That might be good for the Superhawk because of the maple body and ebony board. Other pickups may be too bright with the maple body. The pickups have a great clean tone, and handles distortion well without getting muddy and losing the tone. There are video reviews of the pickups out there for you to check out to see if they might be for you. And if you ever decide the Superhawk is not for you, I would be more than happy to take if off your hands!
Good luck, hope this helps. I would be curious to hear what you decide on,
Dave