Starting Lineup Thoughts?

My team in the league is stacked. I made a good trade mid season and been somewhat lucky to avoid any major injuries. Fortunately I able to ask these start/sit questions with such good options. Here we go, 10 team w/ 1 keeper, 1/2ppr, 2wr, 2rb, 1flex.

Current line up:
Lamar Jackson
Chris Carson
Leonard Fournette
Micheal Thomas
Tyreek Hill
Zach Ertz
Flex: Melvin Gordon/Davante Adams/Austin Ekeler??

Thoughts on who yall think i should start in my flex this week? I can make a case for all three i feel likeā€¦