Honestly tho let's just throw this out there. Healer dps and tanks dpsing outside of tank stance is only a thing in savage where the dps checks are tight. Eventually this will be elevated by gear. So really you don't need to focus on absolute optimal dps on tank or healer unless your doing high end progression content. Which just sounds to me like if you'd rather not worry about such things you just wait till you get the gear to get on the same level of those who do choose to push there class further.