that the vast majority of RB situations are platoon situations which devalues the RBs greatly. These days a big time WR will be more consistent and gain more points than only the very top RBs.
If you had Christian McCaffrey and Dalvin Cook then you would be sitting pretty. Instead you have good RBs in Chris Carson and Austin Ekeler, but those guys aren't going to outperform a Julio Jones or a Tyreek Hill.
Just my 2 cents. I wish you luck, it sounds like a strange league setup.