If you have all ranged, MT takes Suparna, OT takes Chirada. All kill Suparna first, then Chirada. ez pz. I don't know why groups always kill OT's first. Killing Suparna first removes the jump, x2 Wicked Wheel (less stress on heals + tank), and Chirada hits like a pillow with everything but downburst. I usually front load my CDs on Chirada if I OT like this (Vengeance + IB for downburst, IB is up for next one anyways) so heals can snooze through till Suparna dies. The OT can also pick up the Spiny Plume every fight this way, so there is no confusion and a consistent run.

If you got a melee just 3 ranged Suparna, 1 melee Chirada.