I personally am not a adam dunn or jason bay fan, but I could see how you would like them both. I would probably trade adam dunn, as his BA is murderous in roto. I also think that you should trade atkins, as his value to someone short at 3B should net you a nice return. and really he'd just be wasting away on your bench anyways. Teixera is miles ahead of him as a util player. So shop around one of your OF bats along with atkins and see if you can grab an elite SP. If you can your team will be tremendous. I disagree with most of the posters that you are short on speed. I think you're a good bet to approach 90-100sbs, and with that few hitters in a 12 team league that should be at least middle of the pack, and that's all you need speed-wise.
Also if lastings milledge is on the WW, I think he'll be a roto stud this year. Assuming he gets 600 PA, look for alex rios lite type numbers.
Your RP looks great to me. lots of depth, and sometimes thats better than quality. Unfortunately I think you're a little short on SP depth. While i like your picks, another top SP would be a huge help. But you have the trade chips to solve that.