-Spec elemental blast for orb burst
-Save Fulmination charges for orb burst
Phase 2
If your healers are having problems in phase 2 switch to resto before the fight to and put Earthliving on a second weapon. Use the earthliving weapon for phase 2 with healing rain down at all times. Conductivity isn't a bad talent for this either. I've been able to push 100k+ HPS in phase 2 with only the 9% dps loss (+ healing rain cast times). It won't help your ranks, but scratching names off the list is more important.
It's a really easy fight, but it's not a bad idea to over prepare for your first go.