Can i afford a wrx sti?

I'm 18 years old and im obssesed with a subaru wrx sti. Used one is maybe $25 000 to $30 000. I'm doing my carpenter apprentiship and make $21 an hour and part time job at grocery store for sat and sun. so i work around 60hrs a week. Also im going to school in may to june two months to become a second year apprentice. And its 70% of journeymen wage so i would be making 24.50 start of july so would it be a mistake to buy such an expensive car? i have a 95 jeep yj now. Its cheap and everything but im just really obsessive about the sti. I also like supras and skylines so there around $10 000 i need opinions please.