A Unique Idea That Has Been Done Before

When I began my first MS, I was so excited to write a unique vampire novel, something different from all the others out there. Every idea I came up with I jumped online and searched to make sure it was unique. Being that so many people write very successful vampire stories, I wanted something that would grab someones attention, make them say-Hey, this is different. And I did it, or so I thought...
I live in Oklahoma, so my MCs live in Oklahoma-nothing special there, someone's already done it
I come from a few different nationalities, Irish, Polish, Czech, Dutch, Native American and German. So, I thought, Irish vampires, that's not something people do-I was wrong on that one.
I even recently decided my vamps needed to be called another name, everyone uses vampire these days; so why not use an Irish word to name my vampires-oh, wait, apparently thats been done as well....