Holy and Flare by the end of Disc 1? Geez... what are you guys doing to get that, what abilities do you need to do it, how do you find the original source of it, and how long does it all take??? That's just insane.
Holy and Flare by the end of disk 1 is a piece of cake, just level your party to 30 and then use the magical lamp to fight Diabolos, from level 30 onwards he has both the spells.