Flex options to counter early injuries (1 Viewer)

Hi - I'm in a 0.5 PPR league, 12 teams.  3WR, 2RB, 1FLX.  I've been hit with the early injury bug (OBJ, Jeudy) and looking at some options at the Flex Spot and would love some input on which Flex Option to go with.  Happy to answer other questions if you link them.  

WRs:  Stefon Diggs, Antonio Brown, Will Fuller

Flex options:

 - KJ Hamler (on roster)

 - Mark Ingram (on roster)

 - Deonte Harris (FA)

 - Jalen Reagor (FA)

 - Darius Slayton (FA)

I would pick up Reagor to see if he can do it two weeks in a row