Well 14gigs is alot to compress so I would make a few dvds. If you have a DL burner you could make two dvds, if not then find areas in that 14gigs that you don't mind splitting up and make well...four dvds.
Okay now do you have (more like know anyone) DVD studio pro? that might compress it some to fit three dvds. Another way split it in half and use DVD2oneX to compress the separate 7gigs to 4.3gigs thus being able to burn it on two dvds.