Eh I would go with Origins. It is a direct translation so you would get a better feel of how the series developed and what drove many of us to the series. As for difficulty, FF1 in Origins has a setting for easy or hard. The original FF1 wwas only set in hard, so that may help you abit. FF: DoS chaged several things with how both games played. It may be easier to you or harder to you, but if you trully desire to explore the greatness of these games get Origins.