Chef Michael's is a Purina product and I would not use it, but that is JMO.
Out of the foods listed, I would choose Blue.
You can add green beans to his diet if you want to. As long as they aren't salted, it wouldn't be considered a bad food to give. Just don't give so many that you throw the nutrient balance in the food off. A few a day is just fine. You could also mix mashed sweet potato in. OF course he may become pickier if you do this, but that's up to you.
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