I'm being completely honest here Dale, I think you should buy yourself a shitter to get from A to B. You aspire to own fast cars yet you nuke your licence even faster - what's the point?
You're setting your sights bloody high, an expensive car will kill you financially - remember that the purchase price is only the start of it. I kicked off on a modified charade for at least 4 years, and then shared a pulsar SSS for a year with my sister before buying my R31. The R31 is the first car I own outright and was a cheap car to buy. Basically, I'm still at uni and I don't want to get myself into debt. When I finish in 6 months time and start earning $35k+ a year then all bets are off. When I was 17-18 I was trying to pay all running costs on the charade (including being serviced by MRT - ew!) and that was a struggle. So unless you're working full time I don't recommend shooting for anything you have to borrow money for.
I'm sure I'm not the only one who would respect you more if you settled down, lived within your means and made sensible choices in life (like not doing 30km/h over the limit on your Ps). I've never met you but the impression I get is you want to run before you learn to walk, and that sort of thing can get you killed when it comes to cars.