If you're going to use Curaga (II) like a normal Cure over and over again, then yes, you're going to pull hate (and a lot of it). You're healing everyone in range for quite a bit of HP.

Use Cure, Cure II, and Cure III (plus the Sacrifice spells if you have them) to keep your party healed and use your AoEZOMGmassheal Curaga (II) when you're in a pinch and your entire party needs a heal.

Your tank SHOULD be good enough to keep hate off of you with single target Cure spells.