At this point, it might depend on what high school you are applying from. If you are in a highly competitive and Asian school, your academic rigor may not compare too well, but as long as you mentioned WHY you were unable to take “more rigorous courses”. I’m sure GT would want to know about your transfer in 11th grade.
Your grades are high, and ur ECs could work to your benefit if you express them genuinely and deeply (go more than just stating; talk about your emotional and cultural attachment/passion).
It’s definitely a plus to have good scores from international exams!
I personally think you have a good chance (maybe 80%?) based on scores.