Team Advice and Waiver Advice

Hello all I am in a 14 team PPR league with 4 pt QB TDs (work league) any way I was wondering about lineup choices. I am looking for wr and rb and flex options so looking ofr opinions on lineups

RBs- Josh Jacobs, Mixon, Gibson, Howard, Chris Thompson, Benny Snell, Jordan Howard

Wrs- Chark, Lockett, Marquise Brown, Crowder, Parris Campbell

So looking for opinions on who to start. Mixon/Jacobs is a no brainer. My issue is Rivera using 1.4 yards per carry Barber over Gibson. My other issue is Lockett against either JC or Gilly this week. I know start your studs and I may be overthinking it but Gilly/JC are as close to lockdown as possible and brown/crowder have favorable matchups

As for one last piece of advice. I lost Jarwin (my backup to gesicki) but there arent any TEs currently on the waiver, best is logan thomas, uzomah and olsen. But I also dont have a handcuff so I wanted to know if i should drop howard for either booker (jacobs handcuff) or should i drop howard for either breida or gaskin