17? you can't even by yourself a beer! And now you're thinking about buying the roadster that sets the bar in its class? Do you have any idea what you are doing?
You're peaking before you're even out of the gate. Do you understand what that will do to your whole view of the world? After listening to that Porsche engine right behind your ears... it's all going to be one unrealistic expectation after another.
Next you know you're going to think that your first job will be as CEO of Google.
And that your first house will be 6,000 square feet with a infinity pool.
Dude you are playing with fire.
but good on you for learning how to drive at autocross before being old enough to vote. I can't tell you how many spikey-haired, pimply-faced, unemployed, living at home, fast and furious racers have pulled up to me at a light looking to race their front wheel drivers. Too much Xbox.