Chance me!(International Student)

Hello,

I’m from the island of Mauritius, which follows the British education system.
Based on the below data, what are my chances of getting into the Ivy League or other US universities?

All results are actual, not predicted

A-Levels
Mathematics A*
Chemistry A*
Physics A*

AS Level
Accounting (a)
General Paper (a)
-----At AS level, (a) is the maximum grade achievable.

O-Levels
English Language A*
French Language A*
Mathematics A*
Chemistry A*
Physics A*
Biology A*
Principles of Accounting A*
Economics A*
Additional Mathematics A

I’ve just done SAT subject tests - Physics Chemistry French and I believe my scores will most likely be perfect or near perfect(that is 800 in each). I am going to do SAT Reasoning in October.

I’m a self taught guitarist and drummer. I’ve participated in 3 science fairs(one time runner up) and multiple essay competitions(one time prize winner). I’ve taken part in the Australian Maths Competition and have got Certificate of Distinction 3 times. I’m ranked 2nd nation wide in one of the AS levels. I’m currently in a gap year and will be applying for '18 entry. In the gap year I’ve just participated in the Commonwealth Essay competition and i have taught myself some web development(HTML, CSS, PHP, MYSQL, JavaScript) and I’m currently developing a site for the students of my ex-school.
I also help my parents run their clinic as much as I can.