A Pathfinder Adventure: The Demon Crown
I feel like it would be easier to find new players if you didn't require taking over a character. It's not just a higher buy-in to take over a pre-existing character -- most players prefer to be able to choose a character's race and class, for instance.
This is in no way meant as an attack and is purely a recommendation, because this isn't the first place I've seen this but in particular I know pathfinder players tend to be averse to prebuilt characters in most circumstances