10/10 for wanting to do something fun, but you're miles out of your depth here I'm afraid. Forget any notion of competing professionally at drifting for now, and just go and see if you actually enjoy it first. As has been said, it's a ridiculously expensive hobby but if you just see it as a hobby then you'll enjoy yourself more. Go into it with ideas of grandeur and you'll probably get frustrated if you don't turn out to be the greatest undiscovered drift king in the world.
Really don't mean to **** on your parade, and I genuinely hope you do succeed, but I just want you to be aware of what you're aiming for.