Hi Gus, yes there’s a certain compactness about it. Though given the size of most places an overnight would at each stop would probably be warranted. Still not an especially long journey.
The abandoned railway lines would be an interesting (brace yourself) side line, though perhaps I wouldn’t walk too far down them. Leaving town at any stop would be rather against the spirit of The Next Stop I think. Of course, that gives rise to a whole other volume of the book: Scotland’s closed lines. That, however, is something covered well by other books. Mind you, I have already visited the Invergarry line: http://www.simonvarwell.co.uk/the-old-railway-at-invergarry/