Two spots, 5 players 100% WHIR

[ssf12345]

Ok, so this is for my main team thats in my signature below. Its a .5ppr with a W/R flex with standard scoring.

I have two spots, a WR and my flex (W/R) position that im a little confused on. S Jax is on the bye so Mendy and Smith will start at RB. No way Johnson or Colston sit so that leaves the third for Mason, Smith, Walter. Im favoring in starting Mason at WR as hes facing Cincy Def and they're bottom five in pass yards allowed. So my order would be Mason, Smith, Walter..does this sound right?

Now for my W/R spot. Should i go for another WR here or should i roll with Jamaal Charles (favoring him b/c hell get guaranteed touches but lets face it KC sucks) or Felix Jones(not enough touches)?

Thanks... WHIR always