Minimum to kill is as follows:
73+ NIN, RDM, WHM, skill
Bring Echo Drops just in case.
Pop is lottery approx every 12 hours.
Got him yesrerday with those three jobs. Had already killed it for the RDM a while back, so I got the shield this time.
Really only a few things to worry about. You need an excellent NIN (I think ours only got hit...twice). WHM Flash instantly if NIN is hit, Stona or Silena right away. Erase INT down on RDM and Silena too. Keep Haste + Refresh and it's simple.
Fight probably took 10-15 minutes, since we had no real damage.