I had alot of trouble with the 1st boss due to mind control, but after that it was a doddle. Think I had to CC my own chars! Went to sleep before twins though, guess them and last boss (C'thun?) would be tricky. This was last year I think, so maybe you could 1ish shot the 1st boss now.

Other than that, I've only done the instance once with a pug, so I'm not really an expert on it; got the eye but dont have the rep to turn it in, oops.

Pretty sure I've heard mention of AQ40 on the forums before, probably worth a search.

Good luck