Do I Start Monangai?

I am wondering which player to start. I was able to pick Monangai off free agency last night and I already started Achane.

My others RB is Vidal which im assuming is a must start.

So it's really in-between Monangai or BTJ for me. Maybe even a sneaky Gadsden at Flex.

1. Vidal
2. BTJ
3. Monangai
4. Gadsden