The Round of Coire Lagan sounds brilliant. Is it described in detail in any guidebook? (I can't find a table of contents online for the SMC or Cicerone Skye guides.)
I do have Bailey's Scotland's Mountain Ridges (and Latter's volume 2).
There’s a very detailed description in Tom Prentice’s “The Cuillin & Other Skye Mountains”, p. 147-51. Mica Publishing, 2019. It’s also in most of the older scrambling guides.
Yes, it's described in detail in the Cicerone guide book I wrote. 12 pages cover it and include map, photo typos and photos all linked to written description.
Let me know if you want a copy and I can get one in the post. Enjoy the route, it's amazing.