The advantage of doing the show with stop motion minifigs way is that you could have almost any celebrity be on the show, including Batman, Darth Vader, Indiana Jones, Harry Potter, NBA athletes, etc. without the cost of paying a real person.
However, stop motion takes a LONG time … this is a job for someone who has a lot of time on their hands, ex. is not old enough to drive.
I would suggest recruiting an expert via the internet to do the stop motion animation. All you would need to send the animator is the sound track and they could do the rest.