If the Celtics pick around 5-7, I think they come away with a nice perimeter player: Russell, Hezonja, Oubre, Johnson. There is a lot to like about all of those players.
As chad ford has said this draft is hard to order between 5-12. There are a lot of nice players in that range.
I am not that high on Cauley-Stein as a top 6 pick. I think he'll be an excellent backup center, but might struggle against starters in the NBA.