I think you got a nice working horse.
He does stand underneath himself in front, but the second photo with the saddle on him shows a much less severe angle, and I think it's a more accurate portrayal of his front legs.
His pasterns are angled nicely, not too long, not too short, looks like they could stand up to a lot of use.
His back legs are posty, but he has nice deep hocks and a low stifle, so I could imagine he has smoother swinging gaits, and can probably get underneath himself easily.
Steep shoulder -I associate that with a smoother ride.
His neck ties in a bit high.
His croup has a nice angle in the later saddled photo.
I actually really like him. He looks like a true all around horse, and he has a really usable body from the looks of it.
I would think some type of halter blood lines from the heavier set body and the lighter bone. Though he doesn't have the rhino-esque physique of some "halter" horses, I've seen a few that resemble him.