Would this story idea work? And some help please?

I'm writing a story and the basic plotline is that a group of about 7 Halloween style "monsters": A witch (female), a demon (male), an angel (female), a vampire (female), a Frankenstien monster (female), a werewolf (male), and a zombie (female), are trying to hide the fact that they're heirs to their clan's fortune, because the creatures outside of the barriers in the towns in their world are always going to try and kill the heirs. So they get found out and the zombie and vampire get kidnapped, so the others go and rescue them, it's a horror/romance trilogy I'm planning on writing. The series is called Hallow's End Academy, I need names for the 7 characters, and for each of the three books, I need names for the villans, two insane necromancers, a name for this old wise wizard who helps them, and a name for a five year old prophet.