So say for group content I wanted to be a healer - would it be worth starting out as a White Mage, or instead starting out as something else and then working into healing? i.e. If I'm a healer am I going to be severely limited in what I can do outside of group content (i.e. will it have the WoW side effect of taking three times as long to kill a normal mob compared to what it'd take as a DPS class)