I don't like this deal at all. Cargo is worth alot more than Holliday and Santana imo. I like Santana, but the always goes down with some kind of injury (that's the nature of his position) that keeps us saying, I'd loveto see what he could do in a full season. Holliday is also a good OF, but I still think you should be getting more for Cargo. See who else this guy might be willing to give up. I personally would keep Cargo, he's an absolute beast that contributes in every single offensive category...he would be on my not available for trade list, unless I was totally shocked with a trade that overwhelmed me, the kind of trade that I would be an idiot not to take...that's what would be required for anybody to pry him away from my squad, if I was lucky enough to have him. So that's what I would recomend to you, keep him unless somebody is willing to waaaaay overpay.
"Baseball is ninety percent mental. The other half is physical." --Yogi Berra