Right so if as soon as you get to gizamalukes grotto and you have quina learn lv.5 death (or lv.4 i forget lol) climb past the moogles and go onto the lledge and you kill now 1 hit killl grand dragons
i used this to get to level 99 in no time and still hadnt fought gizamaluke yet, i think though im not sure if i had learned it by that point

also if you always have the auto haste ,auto regain MP attack for your fighters. This made me pretty much invinceable even beatin ozma the first time although he did take ages to beat cause of that damed curaga