Whoa hold on a minute. I don't play PPR, but in standard scoring Michael Bush has THE MOST fantasy points of ANY RB for the combined last 4 weeks. I think he's a must start at this point, the matchup isn't too terrible.
Rice hasn't done great lately, but also a must start just because its Ray Rice. I think you should probably start Blount as he is expected to blow up. I would bench CJ, yeah he's been doing well and has history but he's inconsistent this year. He could blow up but he's your riskiest play, and I can't imagine him doing THAT much better than anyone you bench.