I'm not too happy with his legs, they are not particularly sturdy. For halter and normal/light riding he should be fine, but realize that's the biggest flaw for him. He is downhill at the moment but that could be a growth spurt, and thus he may grow at least a bit out of such a steep angle. I don't know much about halter classes so that's all I can say really.
"The trouble with the world is that the stupid are certain and the intelligent are full of doubt"