I would drop the ranger and rogue bot, and pick up a necro and wizard. Then I would donate for weapons in this order:
1) Shaman [done]
2) Necro
3) Warrior
4) Wizard
5) Cleric
6) Bard
Since you don't have access to good hate augs yet, it'd be foolish to donor your pure dps classes unless it's a pet buff (which can't pull aggro), because your tank will never be able to hold the mob.