/click is the way to go. I just tested my macro and it's spot on with the rotation, keeping up all my dots and such. I was able to sustain 5k DPS for 2 minutes, sometimes hitting 5.5k. My more geared shaman is only at 6k on the same fight. I was watching the cooldowns as i was spamming my macro, and the sequence is definately not feasable with a tratitional macro, there's too many times when you need to hit a few more incinerates while the CDs on conflag and chaos bolt are ticking away.

Now I gotta get my mage /clickafied. I know i can do a bit more dps.