Levi Johnston (photos) is getting ready to let it all hang out. The father of Sarah Palin‘s grandson will go ahead with his much-hyped Playgirl shoot in mid-November “in order to get the pictures out for the holidays,” a rep for the magazine told us. “We’re working out the actual details day-by-day, and have come to a very happy conclusion, which we feel readers will be enthralled by.” Johnston’s manager, Tank Jones, has said he’s “90 percent sure” the shoot, for which Johnson has pulled in a reported six figures, will include full-frontal nudity.