Sayid's timeline up until he meets Keamy is also suspect. While we don't have a specific number of days, we can assume he arrives at Nadia's house on the first day. He then learns about the loan that night, and the next day (presumably) he tells the kids he is only staying for a few more days, which implies less than a week. The way the timeline plays out, it is clear that when he meets Keamy, it is still before his planned Toronto trip, which puts it at less than a week after the plane lands! :lol