Should I sell high on Miguel Cabrera?

I've got a chance to move Miguel Cabrera and Jake Peavy for Prince Fielder, Matt Cain, and Johnny Cueto. The only weakness I have is starting pitching and this would even things out there, but losing Miggy is a sizeable loss. It's a 12-team deep h2h league. I'm in first place at the moment, and this might be my chance to fix up my weak spots. On offense I also have Ryan Howard, Pedroia, Nelson Cruz, McCann, Shin-Soo Choo, Alex Gonzo, Furcal, and a deep OF/Util bunch. My RPs are the best collection in the league. What would you do? The more in-depth, the better.