Mobs respawn at 19 mins 32 seconds exactly. Seems to be a common respawn time in most of these dungeons. No need to hurry.
A level 67 requester for the exploration gets level 62 mobs, level 71 requester gets level 71 mobs (much better), both with an average group level of 68. The level 67 mobs have around 55K hp.
This instance doesn't require cc, although that would make it pretty cake, but a slower is necessary without it (beastlord or better works fine). Most pulls are 3-4 mobs without any pacify, singles with proximity pulls.
