Kerryon, Ajayi, Baldwin, or Shepard. Pick 3 0.5ppr

Sorry for the long question i’m pretty conflicted what to do. I need an RB2, a WR3, and a flex in a 0.5ppr from this list:

  1. Kerryon Johnson,
  2. Jay Ajayi
  3. Doug Baldwin
  4. Sterling Shepard

I’m leaning:
RB2: Ajayi
WR3: Baldwin
Flex: Kerryon Johnson

everyone except ajayi

RB2: Kerryon
WR3: Baldwin
Flex: Shep