Well, you have a decent offense, but your P is scary bad.
Pettitte is easily the most overrated SP in fantasy, and your the guy that went after him. Maybe you can trade him, but I doubt it.
Gagne is your only closer, and that just isnt enough. Its only a matter of time before Biddle loses his job - I barely even consider him a closer.
D. Willis is also overrated, so maybe you can deal him too.
I would look to trade Glaus for a decent SP.
I am not sure that I would keep anyone from your bench.
Im sorry this is so negative, but its my opinion that this team will not be good enough as is and you have a lot of work ahead of you.