Anything less than 5-7 is unacceptable.
A bowl game should be expected. I don't foresee Auburn bouncing back in a big way from a 3 win season, especially with a new coach. Vandy will be a revenge game and the staff will have the players fighting hard, plus it's at home. Mizzou should have been an easy win last year, and they won't be much better this year. And Kentucky is still Kentucky.
7-5 is doable and would make me very, very happy. Then, anything above that and CBJ deserves SEC coach of the year consideration.