That's why I put "sky is the limit" because you can spend a lot on wheels and tires. If I was going to drift, I would use 17" wheel/tires because you will eat through tires quickly and 18" tires are more expensive. I would stick with 17" factory take off wheels and a good but inexpensive tire like Falkens, Toyo's, Kumho's. 18" tires from those companies aren't too bad either.
And no, I didn't read your post.