Basically, I think I beat it in 25 hours. O.o I don't remember how long I actually needed to beat it, but it wasn't that long. But I didn't want anything but playing the story. If you only play through the storyline it doesn't take long. Sometimes you have to level up for quite a while, but that's it.
If you like the job system you might take longer. XD" I didn't like it, so I just sticked to one job for each characters - it was quite easy that way. *hehe* ^^"