1.You can go seagm/offgamer to get the digital copy or buy them direct from SE Store (besure to check your account region before purchasing) Also if possible try register an EU region account. The service fee/time card/mog station item are way cheaper than NA.

2.Yes you can change server anytime with a small amount of fee to pay. Personally I'll recommend you switch to JP server (Tonberry) cause of the timezone/latency issues.

3.There's a FFXIV Bundle it include ARR+HW but without 30 day gametime. Only FFXIV ARR containt 30 days game time. FFXIV HW doesnt...