Me and a friend walked legs 1,2,and 3 at the weekend. Started 8am Saturday, took 5 hours exactly to walk leg 1 and just shy of 6.5 hours to walk leg 2. We didn't really know too many fancy lines or owt so it might be possible to improve on this.
Can't really give much timing for Leg3 as we bivvied o. Thuncar Knott, it didn't take too long to get there from Dunmail, 25 mins onto Steel Fell something similar around to Calf Crag. We went upto Sarg Man before High Raise following the line of a beck bellow Ash Crags (it was dark and we'd lost any trod). I'd say it barely took 2 and half hours to walk to Thuncar Knott from Dunnail.
We had a few hours kip as didn't fancy the rough ground from here on in the dark...