Can I flex Corey Davis?

So I’m having trouble deciding who to start at WR and flex. Rn I have Jones Jr and D Jax as my starting receivers and Davis in my flex. On my bench I have Sammy Watkins, Keke, Breida, Mack, Hines and Dion Lewis. I already played Lindsay and AP is my other rb. Does my lineup look ok or should I move things around?

I’d rather play brieda over AP and I wouldn’t trust davis. I’d probably play mack or watkins