I was just cheesing out, getting excited about playing Final Fantasy again, and then I remembered the process of buying 99 health potions, and how exceedingly tedious it was. I'm not sure that I'd have the patience to do that again as an adult.
Pro tip for Final Fantasy that I still remember:
One of the easiest parties to play through the game with is 3 Fighters and 1 Red Mage. You can get through most of the fights with minimal damage, and the Red Mage has what you need for boss fights and the occasional enemy that is strong against physical damage but weak against certain magic. You'll find yourself never needing to buy 99 potions.