Emirates makes most sense. No harder for most of the current crowd to get to due to how close it is (in fact, easier thanks to the transport links). Top facilities, perfect size, we already alternate home matches with arsenal anyway and we would bring in a good revenue even after whatever the rent costs were.
Knowing Levy (I don't actually know him), it really wouldn't surprise me if we tried to leave the country and set up in the US or Asia for a season or something. Imagine the money spinner that playing actual Premier League games in America or Asia would be.
I would guess that Season Ticket holders will be given an option of not taking it up just for the year we are away from the Lane no mmatter where we go. In any case there will be plenty of Season Tickets available in the new stadium if you want one the following year.
Already stated about 2weeks ago in stadium thread that we'd be moving in for 2017-18 season. The developer will take control of it for then, while Spammers lease their white elephant, and rent it to us for a year. Be good to see Upton Park painted Lilywhites.