Maybe a little . . . I actually finished Krokotopia and started Marleybone at Level 32 (but then again, I'm overleveled ) But it's not too bad; just do a few more side quests and you'll catch up. You need more health and better gear to do Mooshu. I think Mooshu is supposed to be for Level 30-40, so don't worry-as long as you can do the quests, it's fine. Level 50 Pyromancer
:D 
jacob hawkeyes lvl 33 pyromancer
) But it's not too bad; just do a few more side quests and you'll catch up. You need more health and better gear to do Mooshu. I think Mooshu is supposed to be for Level 30-40, so don't worry-as long as you can do the quests, it's fine.