That's what Kyle Whittingham would do.
However Bronco already said he would play rb and his highlight running the ball aren't bad. He may have a chance to get some reps at rb, especially if Jamaal isn't fully ready. He can always switch to defense after a year or so if rb has guys in front of him. On paper, there does appear to be more opportunities at rb, especially next year, if he can prove that he can effectively play the position in college.