When should I make this short story available?

I have a short story that I'm going to self-publish--it's a New Year's Eve ghost story. Here's the cover!



The photo is by Mary Gordon, a Wyoming-based photographer. You can see more of her work on Flickr; she's gebodogs there. I searched on "ghostly highway" and her photo was perfect. (The original photo is horizontal rather than vertical--check it out here .)

Here's the very brief blurb (it's a very short story--about 3,880 words)

After catching her husband in the arms of another woman on New Ye...