For me, probably like a month or two. I remember for KH2 it took me about 4 months.
I might start on Critical mode, or Beginner, I don't know yet :/
Really? I beat KH2 in two weeks with school. Now I can beat it in a week easily. c:
Man, I can't wait for tomorrow. I'mma be playing the crap outta it...and I STILL won't finish Terra's scenario for at least three days I think. xD