Thanks a lot for answers
I think I will stick with paying with giftcard option. I already created a new account with real US address and fake cc added (just the number). I think I will calculate the total amount of the order and buy same amount of gift card.
I also read that Whispernet is only for visiting store and Wikipedia and downloading ebooks which I bought over amazon and they charge .99$ for it. So anyways it will be waste of money because I can download it to computer and send it via USB. So it looks like no need for Whispernet.
Last question:
Like I said I created a new account with US info. Should I choose register the device while I order it from that account, or should I mark it as gift and activate it from here? Because I am not sure If I can login to my US account for activation via Turkish IP.