You sound really into making your ghost book being one of fact and not subjectiveness, conjecture or hearsay and folklore which is refreshing and commendable given that nearly all of the rest are just that. Maybe hitting the brick walls that you obviously are will greater awareness to all that even with todays technology, Ghosts are yet to be a proven phenomenon and is why the best of the rest seems so far fetched and made up. Good luck in any case.