Excellent! In that case, just a couple of questions:

How much of the 21st Century is still present such as buildings or gadgets or artifacts? 

Do vampires and werewolves and the sort follow the traditional mythos in terms of strengths and weaknesses, aside from the already stated facts? 

Due to the atomic wars in the past, how has this affected the climate, earth, and/or general appearance?

I'm trying to paint a better picture of your world in my head. Is it akin to Mad Max meets Dracula or is it more Penny Dreadful meets The Tudors?

Love the idea!