Trade help please

Hi all. I been following the Ballers for a couple years now but this is my first post to the forum. I need advice BAD. So my league is half point for. I stream QB and TE so I will only list my RB and WR. We start 2 RB 2 WR and a WR/RB flex as well as a WR/TE flex.
I have Bell, Coleman, Gilleslee, Ellington and Riddick at RB.
I have Dez, Baldwin, Crabtree, Fitz and Marvin Jones at WR
I have been starting 2 RB and 4 WR
I need a RB2 desperately and have been offered Mixon for Fitz.
Would this make sense to take the trade? I could then start 3 RB and 3 WR. Or am I fine with what I have going now.

Any input would b truly appreciated