He's a pretty nice looking fella - good luck with him!
Many years ago me and a friend of mine spent a summer working with several newly adopted mustangs - gentling and training them for folks. We would start them with basic ground manners, leading, picking up feet and progressing to accepting a saddle and a rider. It was so very rewarding to see a frightened creature learn to accept and enjoy human companionship....but in another way....sad to see them lose that freedom.