Getting a skyline would be a sweet deal! If I had known u wanted one i could have sold u mine in january!! But if glacius is right and its gonna cost you like 500,000NOK (85,000USD...) then thats a massive joke especially for a GT-T that only looks like a GTR!!, you could get a decent actual nissan gtr r34 for about 45,000 USD over here!
I think you should play it wise, especially for a first car. A car like that, most people have a hard time even getting eligibility for insurance if you are under 21. You should get something a bit more practical and possibly something better on fuel too. I reckon go with a pug, civic or a golf something along those lines!