Yes, both of those are good things to add to the list.
ACV - I've never taken it for a virus. I think of it as being good for digestion, as it's fermented and helps promote good hydrochloric acid production. So indirectly at least, it's going to be good for immunity. And it will have some vitamin C in it. But @wanderingsaga uses it for immunity (see his comment) so he may know more.