Drafting rbs vs wrs for depth

Keeping Aaron Jones, Kerryon, Hopkins, Tyreek, and Juju. In my mocks, I’ve been drafting either one or wr or none and just filling the bench with rb depth. Usually getting Ingram/Sanders, David Montgomery, Royce Freeman, Penny, AP. Is it better to have a wr on bench in case of injury or pick one up off waivers if I need to?