Final boss help!

[Hyperion4444]

Have you done the CC card quest?
It really doesn't matter for first play through.
Use what I've said, ...

All: HP (9999)
Focus on:
Squall: Str, Vit, Spd. /Lionheart
Rinoa: Str, Mag, Spd. /Meteor Shower 'Angel Wing' after Invincible Moon
Irvine: Str, Vit, Spr./Fast Shot, Normal Shot or whatever is your strongest
Quistis: Mag, Vit, Spr./Mighty Guard, Pulsewave Shock
Zell: Str, Spd, Luck./Arma Fist; up down left right...repeat
Selphie: Mag, Eva, Spr./Full Cure; Wall if you need to.
Use Auras

...you'll be fine.

Trust me, if you do Angel Wing correctly like I said and this site said, and keep using Renzokuken while the third is healing, it will go fast!