Waiver Wire Advise

Full point PPR. Can only have max 5 WR on your team. My WR are OBJ, Cooper, M Jones, Cole and Lockett.

There are some nice options on the waivers, Corey Davis, Antonio Callaway, Geronimo Allison and Mike Williams.

Should I try to get any of them off waivers? Who should I drop? Thanks!