I give up:
Teixeira has started pretty bad so far and I haven't even been playing him that often.
I can lose Teixeira and it won't hurt me too bad. I have been using D. Lee as my utility when I play Mark T., so I can move him to 1b and I have Carl Crawford and Jermaine Dye on the bench that I can use as my Util. I have BJ Upton playing 3rd, and I am unsure on how much of an upgrade Chavez could possibly be over him. Upton's started out pretty hot and Chavez has started out pretty slow.
For Closers I have F. Cordero and JJ Putz. I suppose it's possible that Gagne could have a great season, but I don't think it's very likely.
I am leaning toward a no for this deal, I don't think it would hurt me but it may not really help me either.