Need help to pick a flex. Make or Break week

I have alot of options for my flex play. I got sheppard, woodhead, crowell, booker and burkhead. I am really having a hard time picking who to play. This is a make or break week for playoffs.

I think Crowell is going to get a lot of work this week. The guys talked about it during the matchup show but the chargers have a great defense over all but aren’t as great defending the run specifically. They definitely called out Crowell as a good play this week. Wether or not he is the best of that group could be a toss up.