Hold Mattison or grab S. Miller?

I’m interested in buying in on S. Miller, but my bench has:

T. Cohen
A. Gibson
A. Mattison
J. Jeudy

Of those, I’m thinking that Mattison is the best drop candidate, I do not have Cook, so I only have him as a “what-if?” scenario.

Current WRs:
D. Moore
R. Woods
T. Hilton

RBs:
CEH
Ekeler
M. Brown

2WR, 2RB, 2 Flex, 1 TE PPR

Thanks Footclan!