Your offense is average, but not great. You're a little weak at C, 2B, and in the outfield, as Giles is the only standout guy you have there.
Your pitching is strong at the top, and weak at the bottom. Johnson and Prior are two great pitchers to have, and hopefully Sabathia will pitch more like an ace than he did last year. That's an awful risk with only 3 starters. Benitez and Koch are decent closers who should pick up a good amount of saves. Baez should help in this category as well.
Overall, I'd say your team is above average. You don't have any glaring strengths or weaknesses. It would be helpful to know how many teams are in your league to truly know where you stand in relation to your competition.
Please comment on my roster here