Seems like you have some depth in your wide recievers. Terrel Owens is one of the best, and Boston and Troy Brown are stars. Mcnair is awesome also. Eddie George should have a comeback year. You're a little weak in the RB area. As far as kickers go, you couldn't have a better guy in Vinateri. Defense wise, you're also good, as Cleveland is poised to have a good season built around defense.
Your worries are your Rb's and Aaron Brooks. I'd recommend picking up a backup QB off the free agent list. I don't know who's out there, but I suggest taking a chance on a guy like Gus Ferrotte for the Bengals. And yes, I did just recommend a Bengals quarterback. I'm sure there are some better choices out there, but he's an example of a "sleeper" for me.