I'd say your offense is fairly good for a 20-teamer. Having three top power bats in Ortiz, A-Ram, and Glaus coupled with Delmon and Shealy's upsides should help.
I relied on Sabathia heavily in my 20-teamer last season and proved to be money in the bank on to winning the league. I also had Hamels and Bedard, and mind you, I traded Halladay for a big bat last year. I believe balance between hitting and pitching is more pivotal in a league this deep and so, you might be shakier ground behind Sabathia. But then again, everyone else's pitching appears suspect and looking to gain an edge in pitching week to week isn't the wisest strategy.
I'd pay great attention to promotions, especially on Phillip Hughes, Homer Bailey, and Yovani Gallardo. I burned on a high waiver on Hamels last year and paid great dividends for me to afford trading Halladay at the deadline. It's likely that the likes of Hughes have already been drafted, but that's a good point when the FA pool is likely to be nothing but scraps.
All in all, solid team and like most teams in your league, you should stay competitive.