DoN creator missions arent bad. U can harmpull for those that needs split, they hit decently hard, but i can keep going almost nonstop with my bst+drood that are bazaar/don/quest geared. I get bout 6-7% AA per kill. Anguish+ should mean much more DPS then me, i kill those in 2,5-3 minutes per mob, so if u do em under 2 min u should see an AA under 30 minutes.
After killing the 2 guards inside u can run druid into middle and kill the 3 defuncts for some bonus XP, they die in one dot or one crit nuke.
Also chances are to get metallic drake scales and Glosy drake hides, and its an instanced so youll be left alone with your mobs, repops are 30 minutes
Downside is u need a 3d toon lvl 64+ in group to get the mission, but they can camp out or drop group as soon as u got mission, they may not leave the task tough. If a mob gets gate off he will bring plenty of friends if unlucky. If anyone gate, just soccur. Even if it doesnt move u far it clears agro and u can pull again.
Edit
Just to clarify, its 6-7% XP per mob per toon when grouped. "Solo with druid bot" meaning u drop him from group or wanting AA on both?