Another enabler hoping to welcome you to the Morgan Club! I am on my second purebred Morgan. I have not bought babies, but my first was a greenbroke 4 year old, and current guy was a very green 6year old. And I bought him when I was 62! Neither horse was ever “in training” while I owned them, but Igot regular professional help. I ended up with greenies because I was tired of retraining badly trained horses. And Morgans because I loved their minds.
For many years there was a Morgan breeding farm “Whippoorwill Morgans” in the next town. They specialized in family-friendly (especially before Sport Morgans became a thing!). Many folks around here were able to bring along young horses from there with help but not in a full training program as the horses had calm minds for their age!.
Some Morgans can be quite “spicy” so evaluate his temperament as best to can (and his dam if possible) and consider what personality types you like to work with. And yes to testing for PSSM1.