I really don't like either of those for you. If you are trying to shore up your pitching peavy isn't that much of a step up from liriano, who could have a career year this year, and a great speed/avg prospect with developing power like ellsbury is a bit to give up for either of those.
Kemp, Gutierrez, Cruz (DL), Soriano, Bay, Abreu
A.Gonzalez, I. Stewart
Halladay, Marcum, Kuroda, B. Anderson (DL), Leake, I. Kennedy, C. Lewis, Pelfrey, C. Richard, Slowey, B. Wagner, H. Street, O. Dotel, J. Axford.