Agreed about pretty much all of this. You'll want to do Aero II and Aero as part of your rotations. They'll tick for extra damage even if you drop out of CS.

And Holy is definitely a "use this only on multiple enemies" type deal. It deals really nice damage, but the time needed to cast it + MP cost make it not worth using unless you just absolutely need the stun (which you shouldn't against one enemy.) You'll pump out more damage with your standard DPS rotation than with a single Holy on a single target.