RB always has intriguing choices and as long as they didnt go to Alabama you seldom have to overpay for them.
I would be interested in replacing Felix with another ARK RB. Knile Davis was terrible this year returning from injury but he is a physical freak with speed galore and great size. Most importantly he might be there in round 5.
If Davis isn't there when you want him, LaVeon Bell is a legit 240+ pound back that bangs and wears on you. Gonna guess he could be quite a pass blocker too. (something we definitely need to replace if Felix leaves)
Other short list guys I like:
Mike Gillissipee(sp?)
Marcus Lattimore --- issue will be health and how far he falls. Best talent in this RB class if he is 100% healthy but we arent picking RB at 18.
I'd give my 2nd for Lattimore even though it is a luxury position. Really talented player who will be a difference maker if healthy.
Burkhead: Tough but lacks great speed/quickness. Might be a good WCO type back. Will block for you and will run hard. That toughness leads to injuries though.
Christine. Talented TAMU back that also hasn't stayed healthy. Could end up a steal int he draft. Nice rotational piece IMHO.
Ray Graham. Talented runner but fairly small and some wear and tear from college. Good vision and interesting rotational guy with speed/vision to make big plays.