First of all, no way I would dump Lackey - that wasn't a very good suggestion. Personally, I'd get rid of Zumaya. Yup, he's nasty and could be a sick closer, but he is a middle reliever in 2007. If you are in love with Zoom's potential, dump Chavez. His numbers are not trending in the right direction.
As for your Minor league team, get rid of Pedrioa and Neshek.
Rowell, Snider, Erbe and Adenhart have stud potential and Ellsbury could be a good source of steals and runs in a few years.