|Level 60 and 90 talents are vital.|
Now let's talk talents. You want to be doing this fight as Survival. Serpent Spread is just too useful here. I have done a lot of tinkering with trying to optimize Beast Cleave for BM, but it really doesn't compare.
As Survival and AoE heavy, you want to take Thrill of the Hunt. You'll be doing a fairly ridiculous number of multishots and it doesn't hurt to make that easier. And if it procs when multiple targets aren't around, regening focus while tossing arcane shots isn't bad either. You also really really want to take Barrage. The cooldown on it is perfect for it to be available once for every bat phase.
|Can you tell when the bats are out?|
Here's the video. I'm not dead on the ground for the whole fight. ;-)