Using FTP based intervals to get ready for a big climbing century is like taking ballet to avoid a sunburn.
So to answer:
1) Wrong question
2) Not for what you're doing.
3) You more or less repeated #2 here. But here's what I'd do: Go outside. Check wind direction. Ride hard into the wind for a long time. Come home. Rest. Repeat. Take a day and ride around in the 53/11 for as many hours as you can stand or do some long high rep weight sessions for your legs. You need endurance strength. At hour six you're going to care about your FTP as much as you'll care about the current weather in Dubai.
Last edited by Racer Ex; 04-27-12 at 08:03 AM.