
Originally Posted by
Ouch!
Depends if you want to get 100% completion or not. On one Twilight Princess file, I've logged about 40 hours and have done everything except killing the 60 poes. The reward for killing 20 was enough. Completing Final Fantasy X 100% would take a lot more time (mostly because of the monster catching).
If you're just talking about going through the main story, four days is more than enough time, especially if you end up organizing a schedule. Since you've played both games already, you already should know how everything plays out, unless you forgot. If you remember what to do in Zelda, none of the dungeons should take much longer than an hour. There aren't many parts to get hung up in FFX to begin with.