Buy Margaret and Ron's book on the minor sites and stay 4 days (as long as you're got a car / bike to get about). I got back 3 weeks ago and had a superb time! Take wellies - very squishy peat bog everywhere, and if you're camping and want some locations recommended, let me know. Hope you get a sunset over the stones ... I got a bit carried away with posting the pics but the colours and whole experience ... amazing!