I had, in my mind, the oh so great epic battle with omega.
zell, squall, rhinoa. All of them had their ultimate weapons but I didnt have all the magic or 99 of the good magics, or even know how to use zell's limit break correctly. And I just pressed the auto button for the junction, I never understood it.. Level 99 everyone not sure if everyone had 9999 hp but probably.

I beat omega weapon in about 20+ minutes (im thinking near 40).
No holy wars, holy man or whatever it was called.
All I did was aura (or w.e. it was called - the one that gave you limit breaks) after aura, little doggy (PRAYING for invincible moon), lionheart, and GF/ultima/meteor (zelll, but they did like 3000 at the most.. weird).
I die.
Phoenix!!
aura, little doggy (BEGGING for invincible moon), lionheart, curaga (zell)
lionheart
Omega gets red
SQUALL DIES!!
ZELL DIES!!
Rhinoa's turn... COME ON INVINCLIBLE MOON!! I need to get squall back!!
little doggy cannon.. Im devestated.. 40 minutes wasted..

UAAAAAAHHHHHHRRRRRRRRRRRGGGGGGRRRRRRR

HE DIES!!!!! I rejoice, check out the proof of omega and say:
"all of that.. for this?! WTF?! Oh well.. at least I beat it without holy wars and hero dude =)"
....because I didnt want to give away that card for the holy items (gilgamesh I think). I dont know why, I didnt even collect cards, and I sucked at the card game. Then I proceded to beat the game.

I lost to omega at least 10 times (2-3 hours), and I lost at least 5 times when I went to beat the game afterwards.

............so I guess.... good luck, I needed lots of it, and you definitely need more if you wanna go for it.

--even in other FF's, Im still scared of Light Pillar =*(