I'll dig out the Beer Guide and OS map for some ideas.  New to the forum, so please let me know if I'm treading on any toes / transgressing unwritten laws.

No problem with organising a doo or day out.
 One thing I'd say is,check on trailwise website to see if the lanes are still open
 When we did the Staggs doo this yr a couple of the lanes had been closed and the one at the bottom of Monsal Dale had got washed out quite badly.