I really like him. Lovely shoulder, nice hindquarter, nice neck, beautiful face. Lovely short back. A tad over at the knee in the first pic but the other that shows his legs looks much straighter.
Being a QH, he'll most likely mature to be built a bit downhill (his movement is). Most QH are, the best you can hope for is level. That will make dressage harder for him, but QH aren't bred for English so by definition the things that are desirable for what they are bred for are different. He may well excel at speed events, cutting, anything that requires quick changes of direction. Downhill makes them faster - ever wondered why most TB's are slightly downhill? There's your answer.
I think he is a lovely example of a QH, at this point in time, and could well mature very nice.