What is your scoring? Cooper is more a DE as he is an outside rush LB. Unless you have big play scoring with a ton of points for sacks he is the easy drop out of this group.
ETA: Assuming it's Cooper from Denver
ETA2: Although you probably are meaning Cooper from GB. Not sure why Denver's Cooper jumped out to me. If it is Cooper from GB it makes this a lot tougher. I probably rank them. Baun, Cooper, Jones, Sherwood, Bernard.
I think Bernard is too susceptible to injury so I would knock him down.