Is this a head to head league? If so, I wouldnt wait a month before you make moves, because on paper your team will easily make the playoffs.
Howard, Sexon, Sheff will start mashing soon and Zambrano will pick it up. You are not that great at 3b, but I think Rolen is solid enough. Another closer would be helpful as well.
I would sit on this team for a while and if your offense doesnt pick-up, deal one of your starting pitchers.
OF: Soriano, Lee, Rios
BN: Atkins, Hart, A. Jones
SP: Santana, Halladay
RP: Putz, Papelbon
P: Lincecum, Ol. Perez, Bush
BN: Gallardo, Sheets(DL), P. Martinez(DL)