Yeah, iv'e decided to go for Excalibur II. ^.^

I figured using Quina's Auto/Life - Limit Glove Combo should help with the first two disks, not bothering with Hippaul, Cards, Chocobos etc until AFTER 12 Hours, obviously. Erm, skipping FMVs (Can I do that with a PS2?) and Speeding Battle times.
Leveling using Grand Dragons - LV5 Death and Planning my in-game purchases early on... That's everything right?

Anything else I should know chaps? I know it's an old challenge but if anyone has any Personal Guidelines like Disk Finishing times so I can restart from Disks if needed would be of great help!

After this i'll go on FFX, beat the Dark Aeons again but this time give Penance a Thrashing instead of being too lazy to bother with luck Spheres.

PS; Any annoyingly Difficult Bosses? Ark rings a bell...