One dps takes care of Hummel wearing the purple neutraliser, everyone else uses the green.
Two dps stand on Baxter and take care of him, and the fourth ranged dps takes care of Frye as he runs round like a headless chicken.
When Hummel and Baxter start casting 'Chain Reaction' just stand away > 5 yards and move back in after the bang... DO move back in straight afterwards - Hummel runs around if he doesnt have someone stepping on his toes.
We've done this with Mage, Lock, Boomy, Cat, Rogue, DK, Priest 'tanks' with no real problems.
Everyone stays out of poison pools of opposite colour to themselves, just to make it easy on the healer. Ignore the Crazed Apothecaries entirely.
We had a nice druid healer with us, and none us were especially well geared - with GS's between 3.5k and 5.3k.
No sign of a mount yet though - but we have managed a handful of pets and a few of the blue novelty items.