The weather in the UK is a downer! Committing to a single field of study is extremely limiting, unless you are certain at you want to be a Classicist. The TSA is a much harder test than either the ACT or SAT, and you must reach a threshold score to even receive an invitation to interview. For admission to Cambridge, many AP scores of 5 are required. Of course, if you are passionate about studying Classics, you will have no trouble getting into any grad program in the US with a degree from any of those schools. But I agree with @TomSrOfBoston. It is challenging for any first year college student to adapt to the challenges of college life. These challenges will be amplified by an unfamiliar culture, social practices of your peers and the lack of a support network of family and friends. But the appeal of applying, and gaining acceptance, to a great UK university based solely on test scores and interviews, compared to the challenges of ‘holistic’ admissions practices in the US, is undeniable. Apply to US universities as well to keep your options open. You may feel very differently about your preferences and objectives as the year unfolds. Best of luck!