Who to Start. Please Help

Non PPR, Mike Davis, Allen Robinson, Javonte Williams, Jakobi Meyer or Perine?? I’m in a tough spot at Flex with CMC, Mixon and Calvin Ridley out. Need one of the guys at Flex. I’m starting Mixon if he goes. Also keep in mind I’m already starting Cordarrelle Patterson so not sure if it makes sense to start Mike Davis.