Its tough to judge talent levels in deeper leagues like this because I'm not sure how exactly it will stack up against your leaguemates, but your roster looks solid.
Looking at your roster, your top 5 WR/RB/TE are Maurice Jones-Drew, Mark Ingram, Larry Fitzgerald, DeSean Jackson, and Jimmy Graham. Those players would be make a solid starting roster in a 12 team league with the same roster requirements, so that is a good sign. There isn't much depth, but I bet all other rosters look similar in that regard. Flacco should be good, if unspectacular, and Cam Newton has a bunch of upside as a back up.
You should be competitive. Good luck in 2011