Historical Spirit Tours

I’m hoping to have ready by this October a guided tour of local cemeteries, ‘haunted’ sites, and historical points of interest.
The tour will involve participants in interactive demonstrations, stories, gravestone rubbings, and sharing your own personal supernatural experiences. It will be between one and two hours in duration. I’m still working out some details and gathering staff.
The tour may include a stop or two for refreshments. Hot chocolate, apple cider, tea, coffee, treats. I would like to offer a goody bag for guests to take with them after the tour. It would be filled with fun things. It will be mainly a walking tour that hopefully grows into a bus riding tour next year. The bus tour will include visits to several cemeteries, homes, haunted locales, en route movies, and costume contests. This tour will be located in Franklin, Williamson County, TN area. If all goes well I would like to add a Hearse ride tour as well. Any suggestions or preferences that you look for in a tour? What kind of guide do you like?