Flex Start / Sit PPR

Im in a full point PPR and I dont know who to start in my flex:
Doug Martin
Adam Thielen…

I cant decide who i want to start. They both have bad matchups and I also dont know yet if Diggs is starting.

In case it matters, the players i have started above them are
Jordan Howard
Jerick Mckinnon

Doug Baldwin
Dez Bryant

in full point PPR i’d give the slight edge to Thielen. He has no less than 5 grabs in every game so far and is a TARGET MONSTER especially when Diggs is out.