I think you are absolutely right. You can add to your list Nordstrom's, which is in many high-end malls. This is going to be a secular decline for many years. Millenials don't shop as much and when they do it, they do it on-line.
Never ever short a stock with this large a short position. You have a better chance of getting out of a movie theater on fire than getting out of a short position like this without getting badly burned.