Your hitting looks really solid. You might be able to trade away some steals, since you have Pierre, Roberts, and Furcal. Of those, I think Roberts is the least valuable considering how much his success rate dropped in the second half, so i'd deal him if possible.
As for pitching...you have no real ace, but you have two great #2 pitchers in Harden and Beckett. It might be worth trying to trade for a legitimate ace though. You should definitely dominate in strikeouts though, especially with your closers. Pretty nice depth in your rotation too, especially when Penny comes back, which should be soon.
So basically, I think it looks good, but you can probably trade some stolen bases (preferably Roberts if someone wants him) for a bit more power, and you can consider trying to get a legitimate #1 pitcher, although it's not absolutely necessary, since Harden and Beckett are both quite good.
I'd also consider playing Gonzo over Finley, but that's a fairly minor issue.