Your SAT is below the 25th percentile for Yale. Otherwise your stats are quite good. Being the top student in your high school would be quite common for students who end up accepted to Yale, but also applies to many students who are not accepted. Most applicants will be relatively close to being the top student in their high school.
Other universities that might be similar to Yale in selectivity have estimated that something like 80% of applicants are academically fully qualified to attend and do well (at one point years ago Stanford said 80%, MIT said 85%, I did not expect either number to be strictly precise). I think that you are in that 80%. However, the acceptance rate is more like 4.5%. Also, the acceptance rate will include legacy students and recruited athletes, which I am guessing that you are not since I did not see it mentioned. Having only two years of a language is also not ideal (again unless I am misinterpreting the post).
I do not think that your chances of getting admitted to Yale are any better than the overall acceptance rate, and it might be slightly less. In other words your chances might be somewhere around 4% or a bit less. This is of course only a guess.
If you are a competitive applicant for Yale you should be able to compute your unweighted GPA rather easily. If you have nothing but A’s, then you could just say 4.0. If you have one or more B’s, then you would need to count your A’s to compute an unweighted GPA.
Brown is also a reach. Assuming that you are out of state for U.Michigan it is also a reach. Is Virginia Tech going to be affordable for you?
Make sure that you apply to at least one, and preferably two affordable safeties that you would be happy to attend.