How did you defeat bosses? Did you use magic or just spam limit breaks? Or something else?
Before Lionheart, I junctioned magic to Squall's STR to get it to 255 and then let him take damage on purpose to spam whatever limit he had at the time, while Zell used magic and Quistis just did whatever (Drew magic or healed when necessary) After I got Lionheart and Aura, I just spammed Limit Breaks to defeat Bosses quite easily.
Before Lionheart, I junctioned magic to Squall's STR to get it to 255 and then let him take damage on purpose to spam whatever limit he had at the time, while Zell used magic and Quistis just did whatever (Drew magic or healed when necessary) After I got Lionheart and Aura, I just spammed Limit Breaks to defeat Bosses quite easily.
Bahamut certainly took a while with an average of about 500 per hit, and Demi immunity (on purpose, not a lot of good junctioning magic yet, and I needed to draw Full-Life easily, so strength had no priority). I only used Renzokuken on Jumbo Cactaur. A hundred Ultimas (drawn from Shumi Village), with Water elemental attack meant finishing him with only two Renzokukens.