Sorry but just read this thread. I'd also remove the "jump scare" ghosts on a stick in the cemetery. They're tacky and out of character with the other happy haunts.
they add a scare factor to the mansion though, and the song they sing is all about shrieking and being creepy. They screamed until the 80s. There's a reason why Grim Grinning Ghosts is subtitled "the screaming song."