I would suggest that you continue your current schooling. Why change to US schools that are too different from what you expect?
My son attends Caltech. I now know what they expect from their incoming students. It’s not just studying all day and night. An arrogant attitude (only the Ivies) won’t gain admission. You do understand that these are small schools with very limited spaces? They have to select intelligent people who step out of the comfort zone and who make worldly advances outside of the classroom
Stick to what you feel comfortable with and you will save yourself lots of headaches.