Thanks for all the replies.
I agree, 1 hour is too short. I don't even understand why they bother for an hour...
9/12 - 1 hour
9/13 - 1 hour
9/14 - 2.5 hours. I think this is the day I should do. I was planning on coming back to US that day, but I can push it for another day. Better stay an extra day or two, and do some laps