What level are you planning on jumping? I personally like him a lot.
If you were wanting to really move up in jumping and/or eventing I would be cautious about how slight of bone he seems in the lower legs. It may also be a shadow, but he looks like he may stand under at the knee ever so slightly.
Also, he seems short and upright in the shoulder and pasterns (which shows in his jumping picture, without a lot of tuck in the knees).
I like his overall outline. The way his neck is set into the chest and shoulder is lovely. I like his back and loin. His hindquarter could use a bit of muscling (as could his whole topline) but it seems more or less correct.
As long as you are not looking to do BIG big stuff, I would expect this horse to be able to do it.
A vet check is a must with those slight legs and upright joints, though! Watch for arthritis and ringbone.
He looks possibly roached backed and weak in the coupling. He has a bit of a goose rump which can restrict his ability to bring his hind legs under him. He also looks buck kneed and tied in at the knee. I wouldnt be worried about the buck knees because they rarely cause soundness problems, but being tied in at the knee (The suspensory ligament attaches too close to the cannon bone at the back of the knee) can interfere with the horse's ability to evenly distribute the concussion throughout the leg.
She appears to have great movement, though, and looks great over the jumps