Which RB or RBs to drop?

I need to bolster the WR core, i have Baldwin (no Lockett available on waivers), Josh Gordon, Corey Davis and Chris Hogan so lackluster is being nice.

My RBs are Gordon, Fournette, Cook, Mixon, Coleman, Kerryon and Coleman. My question, first having seen Cook handle 22 touches and while he didn’t set the world alight he held up can i drop Murray now as his handcuff? Second as i need depth at WR, depending on what happens tonight with Kerryon can i drop Coleman here as well and grab another WR option?

I’m leaning towards dropping Murray and grab either Allison or Mike Williams off waivers to get someone in whos part of a higher volume pass attack. Then i’ll see who gets dropped and if there are any trade options given my RB wealth that i can use before looking to drop Coleman or Kerryon if he gets next to no usage. Thoughts?