Pick 2 PPR League

I need to pick a RB and my FLEX spot. Here are my current options.

Mike Gillislee
Doug Martin
Tyrell Williams
Latavius Murray
Jamaal Williams (If Ty Montgomery is out)

Tyrell Williams and Latavius Murray

I’d take a gamble on Martin as the RB, if he gets the full workload he should be good so long as he’s stayed in shape. And probably Tyrell Williams for the flex