WR Corp Sucks. Help Pick 2. RB Corp Great. Help pick 4!

So my WR corp is my weakest part of my team. I have OBJ and DJ Moore but he is on bye this week. Need help on which two i should start. FULL PPR

Tyler Boyd
Dante Pettis
Auden Tate
Marvin Jones

For RB, i have a strong team, and I am struggling confirming which 4 i should start. I play in a Flex and super Flex league. Planning on playing both my flex spots with RB.

Dalvin Cook
Chris Carson
Saquon Barkley
Melvin Gordon
Devin Singletary
Miles Sanders

RB: Saquon, Cook, Carson, Gordon/Singletary (maybe see if any other news comes out regarding Singletary before Sunday)

WR: Boyd and Jones

You need to use an RB or two to get a stud WR.