Stone is a steady eddie but is a redraft in a league with 72 players kept. I'd definitely say keep Werenski if you started 6D or had only one other D keeper. But with Josi and Hedman already in a 4D league, I think Werenski is perhaps a bit of overkill to kep. I'd try to package Werenski and a forward you don't plan on retaining for better forward you can retain.
Just curious - why would Eichel, who's in your signature, not be kept?