What are my chances at Oxford E&M?

For context, I am an international student doing IALs at a small british school in the middle east.

I achieved 9999988 in my GCSEs, above average for my school as most students do the minimum 6 IGs.

Planning on Maths Chemistry Economics and Further Maths externally tutored as my school doesn't offer the subject.

Fairly confident in my ability for each subject, achieved a full UMS in IG Chemistry, full UMS in IG Economics and two marks off a 9 in maths 😭

I understand A levels are a different ball game than IGCSEs but i've planned enough to have a different study structure once sixth form begins.

What are my chances at econ and management (heard its less quantitative which I prefer tbh)