In reply to duchessofmalfi:
A,chir is probably the best ridge scramble in Scotland excluding Skye. It is more sustained scrambling and technical than Aonach eagach If you went for Cioch na h-oighe then use the bus service round to Sannox and include Stacach ridge to Goatfell (Highest peak) Scramble all the tors on route then drop back to Brodick.
Cir Mhor is an amazing peak and a pity to miss. If going via Prospero's Prelude adding Old East would continue the climbing at (M) to close to the summit. The footpaths in the Glens now are fantastic compared to the swamp it used to be. I ran through last month in trainers and did it with dry feet in March!
Walkhighlands site has details for hillwalking. Propero,s prelude is just follow easiest line pretty obvious as is Old east. Once on the terrace follow round west to reach the hillside near the summits of Rosa pinnacle(scramble up chimney) and main summit peak easy scramble.
A,chir South to North(Norm) is straightforward due to path stopping and starting at steps until the summit.
Guidebook : Going North from the summit the "Gap" is reached where the ridge levels out after a steep step, turned on the west flank. A few yards farther on descend the steep east wall on good holds into a easy but exposed , partly grassy rock trench slanting down out of site. this leads to a small col at the foot of the overhang thus turned. this descent is marked by a now very faint red arrow painted on the rocks(probably gone) The final section , going north from the col and keepjng to the crest is one of the best on the ridge.
The drop down the East side looks mental at first but is easy just very exposed. I have had a 7 year old down it in the past.