Homer will be the guy - Lingard will get burn unless Robert Burns steps up and stays healthy to allow them to bring Lingard along slowly. You need 2 RBs at minimum to keep them fresh in today's uptempo game.
DJ adds another dimension, but he is not a RB. He's not built like one and i have concerns he would hold up over an entire season. But he is a tremendous athlete and should be treated as one in many forms - wildcat, RB, WR, flanker runs, screens, etc. Let him touch the ball 10 times a game in various forms and see what he can do.