Looking for advice for best way to farm for Atlas Memories

Trying to finish my 40 and unfortunately, like last league, the final one for me is of course the 6 different types of memories (have 5 of 6 and some dupes from normal play). I'm going to do one final big respec on the atlas to try to farm for the 6th memory I still need but wondering what everyone thinks is the best kind of atlas setup for that. Grand Design? Wandering Path? Something else?

Note, I play SSF so I cannot just buy the missing memory.

Memory drops are not affected by quantity in any way, so the best way to farm them is with pack size. I imagine Grand Designs + Growing Hordes is best for this.

Thanks, I'll give it a shot!