I see everything except a heat deflector included. One of those would be required for baking. If the grill is 18" diameter KJ and BGE accessories might work in it.
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I take it that the bucket on the bottom shelf is for water in case of fire. Any danger of Joe getting too hot and scorching the table. I see where you cut a hole in the top so the bottom is on the next shelf. Well constructed with a lot of thought.