Originally Posted by thoroughbredtail
Since he's a TB, shouldn't he be a good jumper?
Not necessarily! Some TB are good jumpers, some are not. Some are built for it and some are most certainly not. Some really enjoy jumping, and some do not (just like any breed). This guy might be fine for just funning around on the farm or hopping over a log on the trail, but he is not built right for higher level jumping.
I think for your intended use, as a for fun horse without any competition goals, he will be ok if his temperament is what you are looking for, but as others have pointed out he does have some noticeable conformation faults that may limit his abilities over fences and in general.