Choose my FLEX: T. Warren, Concepcion or Bears WRs?

10-man, Full PPR, 2 Flex.

My lineup is pretty much set for this week. I just don't know who to play at my 2nd Flex spot. Flex #1 is Jamo (yes, I'm giving him one last chance) who's boom or bust at his finest. Should I aim for floor or ceiling at Flex #2?

Option 1: Tyler Warren. My TE position is set with Kittle. I'm having a hard time playing 2 TE's especially when Warren is playing the Houston D.

Option 2: KC Concepcion. Not much to say here. He plays for Cleveland... do we trust Watson to continue to play as good as he did vs the Bucs? Do we trust Concepcion with Boston taking targets off him?

Option 3: Odunze or Burden. I'm scared of the Bears QB room for week 3. But at the same time I'm askimg myself "Can it even get worse from how it was weeks 1 and 2?"

Help a fantasy brother out.