I'm not impressed by his pedigree.
I'm not sold on his conformation either. I also agree his shoulder looks steep, he looks built downhill, and his neck is very thick. (However, they are poor photos).
You may still have to invest a lot of time into a 12 year old. You may not have him running solid until he's 14. Is it worth it then?
Ultimately, it is your decision, which it does sound like you have made up your mind. He might surprise you, who knows, but I myself would NOT purchase him with the horse market being cheap and lots of prospects out there. JMO
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.