PPR Flex - Williams v Collins

Hey guys - my team has been cruising these last few weeks thanks to some waiver pick ups really panning out, and now I’m up against last year’s champ so I need to really crush him to keep my first Footclan title hopes alive.

We run a 3WR/2RB/TE/Flex PPR league with only 4 bench spots. My starting line up this week is most likely:
QB: Rivers
RB1: Bell
RB2: Drake
WR1: Allen
WR2: Adams
WR3: Funchess
TE: Gronk
Flex: Williams
D/ST: Saints
K: Zuerlain

Bench: Collins, Goodwin, Ravens D/ST, Smith-Schuster

I’m really debating between Williams and Collins for the flex spot, with Goodwin as an afterthought maybe. I lean towards Williams especially if A.A.Ron comes back and makes it impossible to stack the box vs Williams, but any thoughts/ideas appreciated!

Stay in the flames and go with Williams! He’s been in fire lately and should have a great game Sunday with Aaron Rodgers back leading the offense.