I may be thinking way outta my mind here, but here's what I was thinkin'

I'm getting married later this year in ICT (Wichita). All CO flights from IAH are on RJs. I'm gonna be having enough family flying up from Houston to fill one of those flights completely. Would I have to inquire with ExpressJet/Chatauqua about chartering one flight to accomodate all the guests, or can this even be done?