Find a good spot for TB to aim so it doesn't fall off and the map is smooth sailing. Standing next to the pylon, I aimed at the West walk way at hint 4.
Party: 1 TB monk (near pylon), 3 summoners with huntress/monk pets (2 at hint 1, 1 at hint 2)
Test combat time - 36:17 ~960 kills/min (solid 2nd place PS overall)