You should be good with just the non ghosting LED's. You could also just buy the cheaper LED's and then install the new lamp board and that will fix the ghosting issue altogether. All bally pinballs of this era will have ghosting in all the controlled lights. I would just get this if you dont plan on keeping the game cheaper solution.
http://www.siegecraft.us/presta/index.php?id_category=15&controller=category&id_lang=1
Joe