consult a lawyer....
http://www.apic-worldwide.com has some internet specialty lawyers listed on their site... if you look at most "mardi gras" sites.. they are "documentaries" of mardi gras... if you started selling images of underage girls to other people to use on their sites... then you would no longer be a doing a documentary... you are selling content... as i said... check with a lawyer... child porn peddlers don't fare well in prison
peace
greg