Happy to help Marty. The high path was my planned route last year, but I took the easy option in the end to walk with friends. I used geograph.org and satellite views a lot to check the path and burn crossing, you can just pick out the bridge, I think it will go, just be brave with the deer fence :slightly_smiling_face:

Technically speaking, you can still walk along the Caledonian Canal......

https://www.bbc.co.uk/news/uk-scotland-highlands-islands-47496621