That part is fine, as long as it’s more of a “fun thought exercise”, in the realm of “all of the countries I’d like to see if my parents win the lottery”. There’s nothing wrong with getting an idea of all the many ways, that colleges and universities can be different from one another – e.g., in size, location in the country, city/suburban/“middle of nowhere”, surrounding landscapes, etc.
That’s pointless. For any highly selective colleges where one would have to worry to “get there”, there is no “how” that you can figure out.
It works the other way around: You do the best you can in school, actively pursue passions and interests out of school, be a good person that works well with other people. Then, once in high school, you might have certain areas of study (things you’d never think of today) that you enjoy more than others.
That will help you figure out in 4 years or so, what colleges would suit you the best, and that will value the person you will have become by then.