OBJ for DJ?

So looking to aquire a stud RB. I am fairly weak at RB.

I have Ingram, Montgomery, Sanders, Thompson, Duke, and just picked up Darrel Williams.

My WR are fairly deep I have Adams, OBJ, Cooks, Samuel, and McLaurin

Looking to trade OBJ for David Johnson. Think this is a fair haul for me to get and RB1?