QB Stream Pickup Help

Need some help to pick up a streaming QB for week 7. In a 14 team ppr league my options are: Case Keenum, Dak Prescott, CJ Breathard, Josh Rosen, Brock Osweiler. Unfortunately for me people tend to stash at least 2QBs throughout the year so my options are limited. Big Ben has been my starting QB but is on bye. Any thoughts?