I'd go with the middle. The right looks too similar to Jon in FS JL and I don't know how I feel about Superman with anything covering his head-- he's always been an open character. I think the basic suit is great and the cape makes it come together. White on blue was the design signature for Val so I liked keeping it over the red.
He absolutely should keep that hair and I think the slimmer build works best for keeping Val feel like a young pacifist. I really like that look for him.