Kirk cousins trade?

I currently am streaming since Watson went down on me and I have goff however I was offered Kirk Cousins for Devante Parker. My issue is my WR Core is pretty low and its a 3 WR League
My Lineup is currently:
QB: Goff
WR: Thomas
WR: Crabtree
WR: Parker
RB: Gordon
RB: Thompson
TE: Doyle (Kroft for Bye)
FLEX: Sanu/Burkhead
Bench: Ekeler, Woodhead, Ty Montgomery, and Alfred Morris.

Should I do this trade? Or should I just continue to stream QB’s to not lose my WR core?