Which WRs should I start?

Which 2 would you start out of these 4:

Evans, chark, Keenan Allen, and AJ Brown

Also would you flex one of them over CEH with bell presumable playing this week?

1/2 ppr league

Keenan Allen if he’s good to go would be an automatic start for me and AJ Brown has been playing brilliantly although it’s not a matchup anybody really loves playing guys in.

Evans v Raiders perhaps as flex, he surely gets increased volume and is a good pick if its not a blowout or easy win (got to imagine his targets will improve and his d don’t score pick 6s and interceptions that set up near goal line every week)

I’m starting Keenan and AJ Brown this week and leaving CEH in the flex. I’m not too worried about Bell this week as I believe next week he’ll see a significant work load.