Make the game harder??

[Black Mage FF1]

Are there any ROM hacks, game genie codes, or patches that will make the game harder? Like, give all the villains more HP or something? Not just Cefca, but the whole game.

If you want the game to be harder why dont you just do a low lvl game? Or the game were you beat it with only Edgar, Celes and Setzer.