I might be a little silly when I do dps on WHM, on a single target I tend to start with Aero 3, then before that animation even finishes I toss Aero, then Aero2 if no one is in need of healing. Then just Stone3 x which ever amounts until I have to drop Cleric's Stance again. When next chance comes, depending on party, I start again with Aero 3 rinse and repeat. I do this a lot in expert roulette. :3

When there's more mobs than 3, I tend to buff tank with divine seal regen, medica II, possibly Asylum on top of it, swap to Cleric's stance and Aero 3, then swiftcast Holy, then Assize right after, Shroud of Saints, Holy until I have to heal or mobs aren't dying fast enough to conserve MP for heals. The Stun resist builds up quick so if dps aren't mowing down the mobs with aoes I just go full healing mode after. Better safe than sorry. D: