ZPCI doesn't need a hide hide out, rather they're probably going to have some kind of warehouse/ training center, if any. Sonny 3 will probably not have only 2 zones, especially not another utopia. Sonny 3 will probably have 6 zones, because each release of sonny has added another zone. All speculation of course
Nor me, but there's going to be at least 3 Zones, and that's Story Zones, not Zones that are like Zone 4 (It is part of the story, but not a majorly significant part.), so I would suspect 5 - 6 Zones, and then an all-fun Zone.
I believe that either felicity gave him the wrong tape, there is something after the song, or there is something on side "b". That last one would be hilarious. And I'm pretty sure that the thing in zone 1 is the setting sun, though it could be the raising moon. And if you click the moon in zone 2, is says something about how red it is and how night seems to be lasting forever.