Something I found out, might help you boosters
I was running my rogue in ST for his class quest and cleared out those troll place holders thats needed then killed the dragon spawn for his quest. I hadn't cleared all the welps and trash as I was making a quick run and thought, well i'm really close to that large sleeping green dragon. Let me farm it on the way out.
Well the entire floor of stuff I didn't clear came in shortly after I killed that dragon. I managed to clear them all without a wipe, however my rogue was hiding in the corner with fear. But I thought something like this would be useful for all you boosters. I've never boosted before so I really don't know what to say. But running right to the dragon and killing it may save some time gathering up all the mobs to kill.
Hope thats useful!