Glad you're giving it a second go! Funnily enough, I'm in the exact same situation. Started playing this a few years ago and really enjoyed it. Unfortunately, I moved house and put it down. Never got back into it. Started it again recently and have enjoyed it so much more this time around. I knew the final dungeon involves splitting up into three teams so I've been giving all my characters regular rotation. They are all above level 50 apart from Umaro.

I'm 62 hours in and many of those have involved getting Gau's rages! I think I've done everything now except the final battle with Kefka. Just readying myself for the final assault!