@CloudyMrs possibly worth checking out these folk for route ideas and support potentially. (They are also lovely!)
https://www.tickettoridehighlands.co.uk/
They run a north of Scotland bike taxi service that we used for getting back from Inverness to Fort William. Made the Great Glen Way feasible as a family adventure - because we couldn't use the bus to get home.
Now considering using them to get back to Fort William from Ullapool if we do a family western isles cycle trip.