this last photo shows why his neck looks the way it does. He is standing with a hollow back and a high head. I would take him off that bit and get him in a snaffle. He needs a LOT of back to front riding to learn how to raise the root of his neck and use his abdominal muscles to lengthen and support his back. In this photo he is doing exactly the opposite of that.. he has his head up, and his back hollowed.
Ridden and trained properly, this horse could do quite a lot. He needs at least 6 months of flat training and being ridden from the back to front...
There is something about the outside of a horse that is good for the inside of a man. ~Winston Churchill
) Dinosaur Horse Trainer