I know Wood had a great year, but as a future prospect, I think this is quite high for him. I don't believe he even made BA's top thirty Reds prospects last year. He's apparently a guy who relies on a change up and, while he is clearly skilled and advanced for his age, he doesn't seem like a projectable type pitcher.
For me, this is between Heisey and Cozart. I think it's pretty close. I didn't view Heisey as top five, but he is on the cusp of the major leagues and fits nicely in the six spot.
I would probably have Heisey at six, then Cozart, then Neftali Soto. I'd then consider Wood with Maloney and Mesoraco for nine and ten.