I hope you’ve had time to breathe-if not stop and take a few. And again a few minutes before people arrive.
It’s soooo hard when we get an idea of what we want but can’t find it. I, too, think you will look great.
I might put a note on my 2020 calendar X days before the party to not freak out about the outfit, come up with an outfit that will work from your closet, and then if you have enough time maybe shop, if appropriate. And a note that your husband doesn’t tend to be supportive around this but that’s him.