I assume by the comment “keep the res 720” that this was shot at 720. In that case, taking something shot in NTSC DV at 720x480 and rendering it larger isn’t going to help. Keep the render at the same resolution as the source footage.
What device will be used to play it? A DVD player? A Laptop? This will affect what you should render it as. If a DVD player then just render it as you normally would to a DVD. If you are playing it from a laptop, you want to render it progressive scan so that you don’t have interlacing artifacts which a PC will not compensate for (but the DVD player will)
Well too bad for them, I did make a dvd copy but what the heck they want a vhs version and even an old beta version as well. As long as I don't pay for it :)