Barks said:If you don't mind an alternative suggestion to your graveyard shoot, maybe a tripod is a better and cheaper alternative?
Mount your camera on a tripod and use shutter release cable, 2 second self timer, mirror lock up and bulb exposure mode and you won't need any lights. It will probably take you a few goes to get the exposure right but you should get there. Don't be afraid of 2 minute exposures or longer in bulb mode if necessary.