i would say go for a n/a model for sure.
next thing is $$ u need enough for the car,insurance,rego,transfer,sevices,other costs that pop up.
n/a skylines have enough power if not to much power for a first car. it may not seam like to much but in the wet that can all change and fast.
as long as u have enough $$ go for it. its just cars are a black hole for money