[ZeTurd]

I think it's a good call to remove KJxx from his hand range. An aggressive opponent, and slightly tilted to boot, typically always leads out that hand when checked to.

But as Ribbo points out, there's something missing from your description. You say that you think he's on tilt. Does that mean he might be willing to call down light? You say you suspect him of being a decent player; does that mean he might be able to figure out what you're up to here? That said, I often make the same kind of move myself when a river hits that makes me able to represent a nut hand that it's unlikely my opponent will be able to call down.