long as you pay attention you ought to be fine, if the task scales down correctly and your team can handle the mobs inside.
What I tend to do is park in a corner of the room you zone into. Pull the roamer in the south tunnel (to avoid adds later on) and as long as you are on your toes, you can single pull the main room to the north. Make sure you snag the roamers in the east and west tunnels. Once you have cleared that room, move your crew to roughly the middle, giving you some room to work with for pulling the top room. I generally leave my crew there till the end of the mission.
Pulling the top room can bring in 2-3 like Sum1 said. I see you have a ranger, SK, and rogue. Any of those classes can split the mobs well enough, if your enchanter needs the help, or tank has trouble standing up to 3 while enchanter locks em down. I would personally suggest the ranger, with his push-root-forget spells he can split at the getgo, then again at the camp if needed, as well as snare/root park.
You will be looking for two random drops, I generally get them as I clear this room. I clear up the middle, looking for the big green hulking things to pull and kill. Once I get the 2 random drops, you can use IVU to run north to the throne and pick up the groundspawn piece you need. Click on all 3 to activate the Bokon.
Something the write up failed to mention when I was first doing this mission, the Bokon just appear in the room you first start in. Poof, 4 of em. This is why I mentioned setting up at camp 2, to avoid dieing at this stage! heh. Pull the Bokon, more will appear, walking up from the southern tunnel we first clear the roamer out of. Pull the next batch, and once more more spawn. Finish them, loot a final drop. Turn everything in to the Aspect NPC to get your reward.
----------------
I know you probably know how to do the mission, passing time waiting for kiddo to get off work, and figured others reading might like a short write up on the mission =)
