Quote from Laureli
I think you could change a little of your vitality for more dmg. I seem to have pretty similar stats and I'm doing MP4 easily and ubers on MP7 with out much of trouble. (grouped, haven't tried soloing). I wasn't able to check your profile so I don't know if you have life steal or LOH. If you don't have, get it and you'll be able to progress further.
No I don't have any LOH or LL right now. What kind of build do you use for ubers? I'm using bears right now.