Hi this looks like quite a route I'm from bradwell which you skirt past on your way to abney, are you planning on going down the old Road at mam tor at castleton? If so you may struggle with teneres through the pedestrian gates if not it's just a minor detour down winnats pass, not to put a downer on it just pointing it out.When are you planning on doing it as I'd like to tag along I also know of a couple of other lanes out towards Hathersage and Sheffield which may extend your route somewhat. If I can be of any help let me know.
Cheers Rich