The image in the monitor will look better than what you will see once it is downrezzed to DVD size. Make sure you are looking at the monitor set to 100% (not "fit" or 200%) so that it is not over-enlarged.
You will not know what you have until you are looking at the disk playing on the player/TV.
Try it both ways and see what you get.
It is short so transcode time is not an issue, right? If it is, use a short section with movement as your sample.