What would you score him at then stump? Not many 3 1/2 or 4 1/2 year olds have that small of a body, such a lack of antler mass and a 12 inch inside spread.
Look at the small neck and sholders and the long lanky snout. No way he is older than 2 1/2 IMO.
He has some great genes and I'm sure he has older brothers and a daddy

By all means take him if you are happy with him and have a shot. Good luck what ever you choose.