Your offense looks really good
good power, some decent speed, good average other than Fields (might not even start this year in the majors though)
Like you said your pitching is fairly weak, and with Sheets a health risk it makes it that much worse. Buerhle's not bad, Arroyo could bounce back decently, I'd get ride of Marcum and Hernandez, if Shawn HIll stays healthy he could be really good for ERA and WHIP. Be vigilant with the waiver wire and any news coming out of spring training, if you can pick up guys like Cueto, or Garza, Wade Davis, you might get a decent staff after all.
Finally your pen is pretty good too.