The good news: Schools will take significant medical expenses into account when calculating your financial need. I don’t know how financial aid will be for international applicants at the graduate level, so this may not be enough, but it’ll help.
The bad news: Average (grades) + average (recommendations) + average (internships) will rarely mean admission to a top 30 school. Your school’s bell curve system and its lack of fit with your interests won’t excuse bad grades. Statements like this…
…are to be avoided at all costs, because you come off as arrogant and not the sort of person most colleges would want on their campus.