Mapping using Grand Design + Stream of consciousness, chisel + alc and vaal (also random sextants). Fortune favour the brave for extra pack size. I use niko mission for the boost with "Packed with energy"

Basically farming altars / strongboxes and essences with great pack size fast, my prefered way to map no need for scarabs or specific league mechanic you just go in and farm.

https://pobb.in/Qxmzp0uBoTKX (the 19% spell supp on gloves is 12% + 7% implicit I was lazy and used the lightning exposure implicit to simulate the awakened lightning pen)

Edit the atlas tree : https://poeplanner.com/atlas-tree/BAACAH8AXz54gMZmTPVJ7Lfliy7Q2BmIes5doMHuhCpnvv7F8VRtiLj_p-IhYCIp81sw-vxNKOeUg7VmEID2H0y6fVqN6rvr2VuMkfjft12L4X2R6PIGag5K3v6fO4g02hS1oUazi3NnYKykK3HQvNDGqdErnEhhRVihaCmNAXrLJIJR4edTX_r4AmtmMKd7ghkAkfCA3YMZCj0K5StN3PuHThui0OAMTZFfSs-JxSHic7K6NTCRztXqOL8XUMQfq5Su7xN9GwiQ2aRlGIsLcf1tWx6P5YgHy3Izxsn-0YrYm9VpzZbCdomj2VypQ-T8tWNmHz8ITPLEFtnGTdGH1KDW0CgUAB-LCAAAAAAAAAMDAAAAAAAAAAAA

Personal taste in the atlas tree I leave Rituals open because I enjoy doing them with this build, for passive income you can leave heist open to get some smuggler's cache I just have no will to sell blueprint / contracts. Harvest is also an option but it takes a little bit too long so you will eventually run out of flask. If you aren't playing with soulthirst honestly go for it you generate 10-20c on lifeforce everytime you encounter it in T16 (focus purple and yellow lifeforce they are more valued).