All of the schools on your list are huge reaches for any student – even more so for an international student. Why so focused on prestige versus getting the education you need to enter the profession?
I am not positive but FWIW I think to become a licensed architect in the US one needs more than a four year degree. Be sure to understand all educational requirements.
Also even if you reach your academic goal, there is no assurance that you will be able to stay in this country after graduation.
Have you looked into options in Korea as well?