I'll echo a few of Chad's thoughts. I think you have a few power bats that should net you 30+ HR's (i.e. Swisher, Laroche, Sexson). Your team might struggle in the power department on paper as the rest will fall in the 20-25 HR range. I think Blalock is an X-factor, simply because his mysterious drop in power last year is a big concern. I'd also say Quentin is an X-factor, but I think his impact is more in the range of Blalock, though I love the kid's upside. One thing seems certain and that is your average will project to be suspect. You should stay in the pack in steals when you have Reyes' 50-60, but whatever you get from the rest of your team in terms of speed is gravy.
Your pitching seems promising and should stay competitive in ratios, but of course, you have to question the kind of consistent run support Kazmir, Patterson, and even Olsen will get this year.