Your list is quite long. I think that you should focus on whatever is the most important to you. I also think that you are doing very well (ignoring grades which are not in your post, unless I missed them).
Also, read the blog “applying sideways” on the MIT web site. The same approach applies to other top universities in the US. As I understand it, it recommends that you do what is right for you, and do it very well. If MIT would be a good fit, then “what is right for you” and “what will help you get into MIT” will be the same thing. “Do what is right for me and do it well” is exactly what I did in high school and I did attend MIT for my bachelor’s. One daughter used the same approach to get into a very good DVM program in the US. However, what was right for her and what was right for me were entirely different things.
I might add that you should look at the differences between the top universities in the US and consider which would be a good fit for you. Also, pay attention to the cost of university in the US, and think about the option of instead getting a bachelor’s degree in your home country and a master’s degree in the US (which is likely to cost less because the master’s is either one or two years, rather than four).
And don’t expect to be able to stay in the US after getting a degree here.