Party: 1 TB monk (near hint 1 make sure his boost hits all the auras), 3 summoners with monk/huntress pets (2 at hint 1 far enough East to pick up the auras, and 1 at hint 2)
Hint 5: Where the goblin copters come from.
Bottom Line though, since the build time is gonna be significant, it just may never end up being worth it, since mob count is so low, even if we can get insta-kills at all spawns.