Nice pics, and great description of your day.
I have done the walk today and found it quite hard for a Corbett.
I went a bit different at the start, after crossing the bridge I took a bees line for the summit and about half way up was on the ridge, but it did take longer than I expect, and no paths.
After finishing there was a crash before Callander and had to wait 2 hours in a traffic jam
Car cramp, no good.