Awesome to have a goal like this, but you'll have to do a boat load of double shifts at MacDonalds over the next 10 years to afford a new one.
So IMO, if you've done well at school, get yourself a degree in Engineering (civil/mech/elec) and focus on the Oil/Gas/Mining industry. If you work hard, by the time you're 28-30yrs old you'll be earning $180-220k+ PA - enough to buy property, have the GT-R, and put the kids thru private school..
Depending on whether Nissan keep the R35 line going, a cheap 2nd hand GT-R might be realistic sooner, but they will be 10+ years old by the time you're actually ready to buy unless mummy and daddy have $$$$$$ and will foot the bill.
Just after my 36th birthday, I bought my 2010 model new out of Western Australia (delivered to Brisbane) late last year, $138k all up, paid $100k up front (cash + trade-in) loaned the rest - could have paid the whole lot out but elected to pay out the balance on the home loan instead. Figured after spending 7 years working overseas in Hong Kong in construction, I deserved to buy myself a present for spending that long in the trenches.....
I don't have a youtube channel, but there are plenty of images of Super Silver 2010 models on google.....
Servicing is $400-$600 for minor intermediate services, $1400-$1500 for larger services like 30,000kms and 50,000kms.
Brakes are $7k+ for stockies
Tyres are $3k+ every 12,000-15,000kms (runflats too)