I think that 5 Question quizzes are from when Funtrivia first started out, the minimum is now 10 questions. If you are having trouble thinking up 10 questions about the Pooka, maybe you could expand the quiz to include other Irish mythological creatures, the Banshee for instance?
It sounds like an interesting quiz and unusual quiz. I'm not an Editor so feel free to ignore me!
They say hard work never hurt anybody, but why take the chance?