What Kinds of RBs can I target with Hopkins and D. Murray?

I’m looking to sell on Hopkins and Demarco. Really looking for a RB1 so who should I target?

Would it be too much to go after Melvin Gordon or Fournette?

My Rb’s : Kamara, Murray, Darkwa, Lynch, David Johnson.

My WR’s: Aj Green, Hopkins, D. Thomas, Cooper, Josh Gordon