It’s better than UChicago. As noted above, the ED admission rate is close to 30% (although admittedly inflated by athletic recruits who are expected to apply ED). And ED is a smaller pool where a closer look will be taken at the holistic picture. And OP’s test scores are above average there, even without taking into account that the verbal score is likely lower because English is not his first language. There are a lot of interesting and impressive aspects to his background. Also, full pay helps a bit. My feeling is that he’d have a shot in the ED pool (still a reach but not entirely out of reach); I wouldn’t be so optimistic RD.
As MYOS says, we lack context. It’s hard to tell, with international GPA’s, how they compare to the curve. Maybe he can get some insight from his guidance counselor as to how that recommendation will look and how he’ll be portrayed by his school, in comparison to his peers.