While he might look right, there's a lot more to the judge than looks. I'm unfamiliar with his acting experience but i think the movie will 100% fall flat if the judge isn't right. I'm not sure kane has the range

Plus he's the mayor of Knoxville, McCarthy's old hometown.

Clancy Brown or Glenn Fleshler (True Detective season 1) probably come closest in my view. Another one, if he were younger and bulkier, and hairless, who I think fits best with the book's overall description of the Judge would be Sid Haig.

The important aspect of an actor for the Judge wouldn't just be his physicality and baldness, it would also have to be a certain very particular type of sinister air. Few large actors have that.

It's hard to say why, but Clancy Brown is the one person I can see with the physicality of The Judge. Maybe it's because of his role as The Kurgan in Highlander.