1. I'm not sure, but I think there might be. Have you tried googling it?

2. Use the code at the mog station.

3. All character info will be transferred to the PS4 version, however you're going to have to reset your gear sets, system and character configs, your chat tabs, and of course your skill sets. All of those will be completely lost upon upgrading. Luckily everything tied to your character you keep, including what you're currently wearing.