Buying maps for tour, what Scale? Amsterdam->Bruges->Brussles->Troyes->Paris

You don't need small scale maps for navigation in the Netherlands - just use a large scale one to know where you need to get to, then use the plethora of bike route signs to get around.

Obviously that is no use when looking for good camping spots, but that's half the fun of touring, shirley?

+1. Tear out the relevant pages from a road atlas just to give you the names of places you should roughly be heading towards, and then go freestyle.