I don't think I am qualified to really give an answer on this.
I would normally think that expecting H to bring S to your work every three hours would be unreasonable, but you have special circumstances with the feeding.
The other stuff seems ok, but I really am not versed in and don't have any experience here to really give a good answer.
Maybe one of the vets has an opinion?
Sorry to let you down, but I guess it couldn't hurt to discuss this with him and see what he says. It is a good start at least. You are laying down expectations and have a plan in place. If he doesn't agree, ask him for HIS plan.
Hopefully someone smarter will come along to help.
