RE: DVD authoring
More time for filming: One hour is a very short time to film, especially is she films various interviews with people who suffer from diabetes.
Filming is often underestimated… and facilitates editing. If you film well, your editing experience is easier. If the footage is not good… editing is a big mess.
Less time for editing. Hence, putting more time with the filming may reduce the 8 hours that you dedicated to editing to … 4 hours… maybe.