1 druid tank, 1 druid heal and 3 rogue ? Viable for dungeon and wpvp ?

[Apatheist]

I'd just go HotW/NS spec on all 5 and swap gear whenever necessary. Heal on one until it's low mana then equip its feral set and switch to another slot to heal.

In theory, the 4 others should have time to regen back to full mana by the time the 5th is OOM and you have innervate for emergencies.