I don't like judging age on summer deer, but I would call him 3.5. Management buck? Depends depends on what you are looking to grow in your heard. Right now, he's probably going to score about 100-110. If he is 3.5 years old now, he will be about 120-130 at maturity(5.5-6.5 years old). If you are trying to grow 150-170 class deer, he needs a bullet.