Triple Crown Senior is a fantastic grain feed – but you’ll need to feed 6 pounds a day to start with and adjust from there. Soaked alfalfa cubes are a great source of protein and complex energy. You can add some rice bran oil – either liquid or pellets – for a good extra source of fat that is easily digestible. And all the grass hay he can eat, of course.
Since the other horse is leaving I wouldn’t necessarily worry about a stall.
The wind of heaven is that which blows between a horse's ears.