Atlas tree is harder to decide than the passive tree. I want everything!
I think I'm first going straight over to the 20% more waystones, then going up to the 30% increased tablets, swing left for Local Knowledge (40% more currency, etc), then south for +rarity of waystones and +20% higher waystones. grab the 3 nodes left of that for +18% more waystones (unless I'm already swimming in sustain), then finish with the precursor circle at the top.
I think precursor tablets are gonna be the way to go since they give you access to all the other map content and I want to start banking them ASAP.