Not that im a expert or anything approaching that but i wish you well if you do go down the adventure of owning him. Looks like he dos need to fill out more, but that will come in time, and as some of the previous posters have said it would be great to see him walking... All the very best stick, i hope you get to have some great days and trips out with him...
Stick I'm no expert at all, but he looks out of proportion head and neck to body, maybe that's an age thing and he will grow into a fine horse and win some nice races