He'll be very good the first 8-10 weeks. It'll be very interesting to see how he's used once Hunt is eligible to return (who I can easily see being the guy coming up big for fantasy teams down the line).
I read exactly what you said and it wasn't the first time you ripped on Vaughn in prior threads (I know this because I agreed with you about not being a big fan of the pick because of the position) but you take it beyond that. Hell, you ripped on Yolbert Sanchez' DSL numbers before your (usual) backtrack in the same thread.
Hard to say. He will definitely be in AAA next season, but can make some noise. I liked him coming out of Wake Forest. I just have a feeling Sox may try and deal from a position they have alot of (1B types) to fill a need.