I do apologize if I was being confusing in my posts...I'll try to clarify.

During P1, I never use Cure 3 until gigaflare, and it's always just Medica II. The Medica II should be divine sealed for the 3rd one, and I haven't been doing that. This caused me to waste some MP topping people off with a rushed Cure 3. For Flatten, I've been timing Medica II to go off right after the last hit of Megaflare goes off, sneak a Cure II in for the flame breath and begin casting stoneskin in preparation for Flatten/Flame Breath x3. If my healing output was better than just 1300 a Cure I, I wouldn't have to use so much MP to keep the tank up during that. Gear will fix that, I personally think it's not major problem (yet).

What I've been doing for P2 is DS+Medica II going off between Tower and Rage, and casting Cure 3 before Rage goes off. If I don't do the Cure 3, won't people die?
- Once the rage goes off I'm healing off tank, and letting Fairy do it's job.