Mack Faab and who would you drop?

Looking to drop an RB or WR and am planning on spending $30 on Mack I have $62/$100 currently.

Who would you drop?
Tevin Coleman
Sony Michel

Dropable RBs:
Kenyan Drake
Lamar Miller

WR: My weakest is Allen Robinson.

I think you can dump Allen Robinson. I fully believe Miller loses his job to Foreman when/if he comes back; but, him coming back is still ify.

Thanks, I had the waiver set with A Rob before reading this. I have Thielin, Hopkins, Kupp and Boyd at WR but am hurting at RB.