Playoff Sit/Starts - what to do?

So we don’t have bye weeks in our league, so the Top 4 of 10 progress to the playoffs, so these sit/starts are pretty important.

So locked in I have

QB ?
Rb - Mccoy
Rb - Kamara
Wr - K Allen
Wr - ?
TE - ?
Flex - ?
D/ST - Pats

So it comes down to

QB - Play Dak or Stream Gabbert, Garropolo, Bortles
WR - Crabtree, Hilton or Marquise Lee - currently on Crabtree, he has a pretty nice match up against the chiefs (I also have Hogan on my bench, but I don’t like leaving it until Monday to see if he is fit)
TE - Play Olsen, or Stream brate (unlikely to get) anderson or burton
RB - Demarco or Alex Collins - I’m leaning Collins, but Demarco has the better match up

Any help would be really appreciated!