First things first dude - call up a few insurance places and pretend you're about to buy a VTIR or a Type R - print off the specs of one of them and see how much insurance is. Ring around, but being a fresh P Plater will guaruntee you'll be paying through the nose - a $12000 car sounds good, but if you have to pay $3000 to get it insured (and you're going to want to do that comprehensivly if you're modding it) then you'd be surprised what you'll find.
There's an insurance thread - search.
Also, as someone mentioned, i'm pretty sure Type R's can't be driven by P Platers - the kW rating is, funnily enough, right on the cut-off by like 2 kW's or something. Fact: if a cop sees you, decides you're a 50-cent listening punk kid from dandenong with his seat so far back you can't see over the dash - chances are s/he's going to make sure you won't be legally allowed to drive the car. No point saving up all this money and having to sell the car a month later. Means you have more paperwork to fill out, more hunting through ads, more placing ads, stamp duty, rego, insurance etc etc.
If its your first car, buy something shit and cheap so you get the feeling of the road - how people drive, react, etc. Even if its just for 3 months. The last thing you want to do is feel invincible and end up on the news.
Go the VTIR, cause... at least you'll be able to drive it.