wow, I loved this game when it first came out. Clocked up about 40 hours but at least 7 of those were trying to breed a damn gold chocobo! Then I never completed it because I wanted to get knights of the round but couldn't reach it
Ultima Weapon? I seem to remember Cloud only using the Omnislash limit break at the very end.
I played this game so much the ingame clock stopped at 99:99 hours
There was another way to get Knights of the Round, though my memory is hazy on the subject as it was a good few years ago now, but I think if you beat either Ruby (in the desert) or Emerald (under the sea) Weapon you got an All-Summon materia which included KOTR?
PS I have the ost for FF7 and FF8 if anyone would like to listen