You could also do worse than check out people who have walked the coast of Britain, as they will have effectively done that section. Alex Ellis-Roswell is currently doing just that and he's already covered Scotland:
Subject: Cape Wrath Trail
Posted: 7 Nov 2017 10:49 pm
I haven’t visited your site for a long time. I walked Lejog in 2015 - you may not remember, but I messaged you some time after I had set off.
Anyway, the message to you in your guestbook from Joe caught my eye. I did all but the last couple of days of the Cape Wrath Trail before cutting across to Tongue and then across the top of Scotland via Dunnet Head. Unfortunately, I just didn’t have enough time to go all the way to Cape Wrath and then across the top.
I am not sure how this works, but I assume that Joe won’t Joe see my message if I post it, unless he should make another visit.
I thought that I would let you know so that you can put him in contact with me should he ever get back in touch with you.