Very useful book indeed helped me, a lot by planing my trek with the mountainbike. You just need to do the whole Thing with the GPS and then give also the GPS tracks. Will be also lighter to generate more informative maps/images for the book for the people without GPS (map in scale, elevation plot ect.). Google earth has also a very good images from the area (some of them already from 2014) and is pretty useful too if you have tracks and can see exactly where do you gave to go.