Dude i have a wife, 3 kids and a mortagage. I wanted a skyline for several years but had to wait until it was right finacially. For me to get this car i had to wait for my wife to get back into the workforce, get ahead on the morgage etc etc.
Daily driving to work and back i cover 80 km a day so fuel is quite expensive. Think its about $70 to fill up the tank with ultimate.
I guess my point is that its great to have one of these cars, and adopt the lifestyle that comes with it, but if financially your not in a good enough position yet then wait. I could think of nothing worse than to have the car parked in the driveway because i cant afford to run it, insure it, mod it and repair it.
Good luck with your decision dude, i hope you make the right choice for yourself