Zloth
I smell a... wumpus!?
Well, like you said, the DLC doesn't impact the game for a while anyway so there's no rush.
I've taken the main quest up to the point where I had to solo-battle that lunatic Runt, and man, was that a fight! I must have had to circle that little area for twenty minutes or more before I finally put him down, and I took a good deal of damage both to myself and gear along the way. Now I'm taking a slight break from the main quest to work on some side ones, as I'm assuming I might be somewhat under-leveled for the main series at the moment.