I am going to be honest when I say I don't think he looks fat enough... He could easily put on some more weight without being truly fat.
Anyhow, I think he has a slight sway back, extremely high withers, maybe a tad bit butt high (cant really tell from the pictures) And he has some upright pasterns.
Hehe, I am not the best critiquer, so I stand corrected, but those are just the things I personally see.
Where about in Arkansas are you? I am from their also.