What are my chances?

Hi! I’m a very peculiar case regarding college. I am currently a freshman, but I have reason for stressing so early. I skipped the 8th grade, and have already set in motion to skip the 10th. The first time it was purely from an academic standpoint. Year after year I would sit in class and learn nothing, always being told that it would be more difficult the next year, but it wasn’t. I have been on an H4 dependent visa since I was four, but my family job security and personal reasons lead to skip again. I will graduate at 15, but will turn 16 shortly after the school year begins. I am planning on majoring. In mechanical engineering and maybe minoring in something robotic. I am in multiple clubs, do multiple after school activities, have fairly good grades, and am not very stressed. I take a ton of elective courses with a few virtual classes here and there and don’t mind missing out. I would have also taken approximately 5 at classes by graduation with everything else as honors. I aim for ivy, mit, and plenty to places abroad. Do I realistically have a chance at some of these places and what could be my course of action if I would like to go to Britain for college (study fully abroad). Any advise relating to my scenario would be great, but I would appreciate it if plausible advise was given to things I can change. Thank you!