Please note that while working on the timed run, you might consider skipping the two-headed ogre boss (Warbringer O'mrogg), because that would save time.

DON'T SKIP Warbringer O'mrogg. Once you engage Kargath Bladefist (the last boss), he'll come running around the corner!

Trust me, you'd have to have a pretty imba party to handle both bosses at the same time :)

Arthic, Sylvanas