A lot of the complications with this encounter have been nerfed substantially by the buff being effectively increased by almost 50%. Since you extend the time between kites, healing the damage taken by the prior kite has become trivialized. Keep in mind a great deal of the posts in this thread are from before the encounter was nerfed and the buff duration extended. It was significantly more difficult encounter when your tank had to renew the buff stacks every 10 seconds instead of every 15 seconds (buff duration was 12 seconds, now is 17 seconds, assume about a 2 second buffer for margin of error in renewing the buff in either case). Basically on a two tick kite (while ideally you only get 1, can you guarentee you will always only get 1, probably not cause mob pathing is never perfect) instead of needing to heal 220,000 damage in 10 seconds, you need to heal 220,000 damage in 15 seconds, lowering the HPS required to do that by a third. Instead of needing 20k HPS, you only need 13.5k HPS (that's just to account for all 5 party members losing about 45k health from multiple ticks on a single kite, not including the additional damage on the tank).
Now that the encounter has been nerfed it is exceptionally easier than it was when this thread was originally created. Keep in mind the historical changes to the encounter and the date that prior advice was given. When things are changed, a lot of advice becomes invalid, however it does not mean those people giving that advice were wrong. At the time the advice was given it was correct.

