IIRC, the optimal DPS rotation goes something like:

Cleric Stance => Aero 3 => Aero 1 => Aero 2 => Stone 3 (until a DoT falls off)

If I feel I can fit it in, just doing Cleric Stance => Aeros => Cleric Stance is usually sufficient, as that puts me back into healer stance, and there's enough time spent casting to drop cleric.

However, all of this is about to change in about 3 weeks.