Day zero:
Drove to the dam, located on the East side of Loch Quoich, there is a car park suitable for quite a few cars. I spent the night in the car. This is where my walk started. The number of deer on the road is actually scary at this time of year!
Day one:
Started the walk at 7 am by crossing the dam. After that there is a path to follow but made shortcuts here and there. Terrain is generally very wet, boggy until ~400 m elevation but solid/rocky thereafter. I was at the top of Gairich a bit after 10am. I approached Sgurr an Fhuarain (the corbett) by aiming the saddle between that and Meall a'Choire Bhuidhe, where nothing to follow but your compass and then turned to the South. The ridge from Sgurr an Fhuarain to Sgurr Mor is a refreshingly easy walk in comparison to the climb and the latter was reached by a few minutes before 2pm. Just follow the ridge, there are two smaller peaks to climb on the way to Sgurr nan Coireachan, which was done by 16:30. From here the ridge is more rocky, exposed and less quick but in turn more beautiful. There are some minor scrambling as well. A quick down and up and I found myself on the top of Garbh Chioch Mhor at 18:20. The descent here towards Sgurr na Ciche is very rocky and included some scrambling. Sgurr na Ciche is very close from the saddle, I was there by 19:20 but again there was some scrambling.
Head torch on, and started to descend towards Sourlies bothy. Apart from the fact that there is no path to follow, no particular difficulties arose down to ~300 elevation. After that the terrain turned to be extremely difficult: cliffs, deep grass so can't see what you step on, numberless turn backs, falls, bruises, swearing, etc., Descend down either to the Finiskaig river and a path to follow, or on the NE side of the ridge toward Carnach River might have been a much better idea...lesson learnt. I reached Sourlies bothy by 23:30 completely exhausted. Went to sleep quickly.
Up to this point: Distance: 30.8 km, ascent: 2928 m, total time: 16.5 hours, stopped time: 5h.
The bothy is in a very good condition, there was a guitar left there!
Day two:
I was, thankfully waken up by a group of people, I didn't even know they were tenting out there, otherwise I would have slept through the whole morning. Anyway, quick breakfast, packing and started the walk around 8am. The path towards Eileam Tioram and Carnoch footbridge was actually heavily under water sometimes but some turns here, turn backs there and the bridge is ok to reach with minor swearing



This day: distance: 17.5 km, ascent: 1564 m, total time: 9h, stopped time: 2h 50 min.
Day three:
I woke up at 3:00, left the warm sleeping bag by 3:20


This day: distance: 20.5 km, ascent: 1695 m, total time: 10h, stopped time 3h 14min.
I hope this helps to plan your next journey.