This is my take on it also. A TOEFL score of 111 suggests to me that you speak English essentially fluently. All the TOEFL does is verify that instruction in English will not be an issue, and with a score of 111 I think that you have verified this quite solidly. 1540 on the SAT is also a very good score.
I think that you are competitive for any university on your list. It is a reachy list. However…
Congratulations! There is probably nothing that is safer than an offer in hand from a very good university that you can afford to attend. Given this as a “safety”, I do not see any point in applying to any universities in the US that you would turn down to go to Warwick.
Be aware that getting a degree from a university in the US does not allow you to stay in the US. Instead, you will be expected / required to leave after graduation. The exceptions are either short term or rare and are also subject to politics, and politics can be subject to change in less than 4 years.
If you want to apply anywhere else I think that your chances would be very good at either Toronto or McGill. However, I do not know your major well enough nor the reputations that these schools have in China to guess whether either would be preferred to Warwick.