Accept trade or not?

I was offered Tyler Lockett and Joe Mixon in exchange for Devonta Freeman and Allen Robinson in a 1/2 PPR league.

While Lockett would give me a more legitimate WR1 (which I don’t have), I fear losing good RB flexibility by giving up Freeman (although I have a great RB1 core with Elliot and Gurley).

What do you guys think?

Current WRs: Woods, Robinson, E. Sanders, Mike Williams, and Sterling Shepard
Current RBs: Gurley, Elliot, Freeman, and T. Coleman