Pass Validation

Hello!

Is it worth it for me to buy? My itinerary is Tokyo-Osaka-Nara-Kyoto-Tokyo.

If so, I'm arriving Tokyo on Feb 7th, but I don't want to start using my pass until the 8th because that's when I plan to go to Osaka and I want to come back to Tokyo on February 14th.

Is it possible to have it validated but have a later start date? I'll be at Shin-Yokohama, but the office doesn't open until 8AM and I want to leave for Osaka as early as possible so I want to get it validated when I arrive at Haneda, but can the start date be for Feb. 8th?