Have you ever been to the site "Voice Actor's Alliance"? Try looking it up, it's a place frequented by amateur VAs, who audition and participate in stuff like this and fandubs, for free. You could hold a little audition, and get just the right voices for your skit.
Fanime 2013 Cosplay List!!!
Yuuko Ichihara: XXXHolic (art reference)~20%
Sister Paula: Trinity Blood (undecided version)~ 100%
Princess Shoukei: Twelve Kingdoms~ 100%
Kamiya Kaoru: Rurouni Kenshin (Jin-e Arc)
Serra: Fire Emblem~ 100%
Click To Visit The Cosplay Teahouse!