I agree - I'd look into a different surgeon. The one I'm going to has done a good amount, but also not so many that he's a "meat market" doc.
I also agree with the hair loss issue - any surgery you have weather it be RnY, Sleeve, bypass, or lapband - hair loss is a very real possibility if not probability.
That being said, I have to say that I appreciate the fact that you're doing your research - whatever you chose to do, I have a feeling you will be very well informed :-)