10/26/2009 AT 12:45 PM EDT
The countdown has begun for Levi Johnston to bare all for Playgirl
The 19-year-old, former fiancé
of Sarah Palin's daughter Bristol is set to show it all before the camera the middle of next month "in order to get the pictures out for the holidays," a Playgirl
spokesperson tells the New York Post
"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," the rep reveals.
The budding media star's manager, Tank Jones, says he's "90 percent sure" the photo session, for which Johnston is reportedly receiving a six-figure monetary endowment, will feature full-frontal nudity.
In terms of looking buff in the buff, Johnston hired a trainer, Marvin Jones, who also advised the teen
on his diet. "Moose meat is very good for you, high in protein and very lean," Jones told PEOPLE. "He's an avid hunter, so he has his own."