Didn't see this thread before you set off, but I'd have recommended the route you took! Went up their myself a few weeks back on the way to Nairn for a couple of days. It's a fantastic road, and I only caught about 2 cars the entire length of it so had a thoroughly enjoyable run!
I think it would be good to incorporate this route into a Scottish meet next year. I am looking at various routes starting in Dundee. Could go the scenic route to Kirriemuir (a great road), then to Blairgowrie (an even better road), then up this way....
Just need to figure out how to get back without driving the same roads :lol: