It would be helpful to know what you're going to do with the horse and what your goals, competitive and otherswise, are.
Good confo for jumping is not the same as good confo for dressage, etc., and flaws that are minor for pleasure and trail riding become major when competing at a certain level.
The horse is certainly striking and attractive. Is he 100% Arab or an Arab cross? I can't really do a detailed critique from these photos, the only thing that jumps out at me is he appears to have a longer back and more sloping croup than is typical for an Arab. Not necessarily a flaw, just not typical for an Arab.
Post more info and actual confo shots when you get them.