I like this horse. I also do not find him glaringly bad from these photos. In fact, he looks a LOVELY lower level dressage horse. A bit long in the back but he looks like he is aged and has survived this long with whatever flaws he has. He also looks like he has had some training (neck looks turned over for one thing).
In returning to riding after a long hiatus you want mentally sound and physically sound. I am going to bet this guy is both.. and he has the look of being able to hack out too.
I think you will enjoy him. Post better pics when you get a chance.