Would he be a waste of time just by looking at his pics? I have been looking for an older horse for my 12 year old son who isnt the most expierenced on a horse. He used to ride a 30 year old babysitter. He is currently taking riding lessons. I have been looking everywhere for a nice horse for him and have came upon this guy. Tell me what I would look for as in health issues if you would. Thanks. I think this older horse is a little thin?