Help with lineup at flex spot in PPR league (1 Viewer)

[CabinFever]

I have a really strong team in one of my PPR dynasty leagues. I love the reports I'm hearing about Gronk for tomorrow's game, but I'm still leaning towards benching him. Would anyone consider starting him in place of either my 4th starting WR or for Reed at the TE spot? Or would anyone replace a WR currently on my bench for a starter?

starting lineup:

Ryan

David Johnson, Gurley

Nelson, Hilton, Benjamin, Sanders

Reed

Bench: (Gronk, Cobb, Pryor, Sheppard)