Hi Sue
I’m a bit late commenting on your post I’m afraid!
I’ve planned to go through the Kinnaird estate too, on Monday 23rd May, going in and out via Scotston at the same points as Graham. My route has been vetted and nothing said about that bit. I discovered a Facebook page for Kinnaird Castle and some of the comments indicate that the estate don’t mind people walking through, confirming what’s already been said here, but there are contact details on the page in case anyone wanted to get in touch, or you could post a question on the page.
You’re probably all organised by this time anyway, I hope you have a great challenge, maybe we will bump into each other, depending on your start date.
Sue Pow