I think you've got a solid plan. I would add to the list "reaffirm to my child that I'm working to improve the situation for next year." Even if these things appear to roll off his back, he does need to learn that there are adults he can trust and who are thinking about his needs.

I've posted ads nearly word for word to yours for such college students. I've gotten some really excellent students this way. Kind, nerves of steel, creative, and flexible.