He is gorgeous & his condition looks great. I'm a HUGE fan of Belgians. If there is one thing I have learned, it's that Belgians are very forgiving.
I have a wonderful Belgian mare. She is strong, smart & calm. We have re-started her & she is doing great.
One thing I would suggest is reading Dr. Beth Valentine's book "Draft Horse Owners Manual". Drafts are prone to EPSM & need a very low starch/carb, high fat diet---in fact, the addition of fat in the form of oil on a daily basis is recommended. I have experimented with oil & have found that my mare does a lot better on the oil. Good luck! Belgians are wonderful horses!