The odds are very, very high that if you apply again as a transfer student, then you will get the same result.
1470 is pretty good.
The SAT is intended for high school students. If you take it as a university / college student, admissions staff at Williams and other schools will not consider your retake. Of course a university student should be better at taking tests. This will not impress anyone.
And the GRE is harder than the SAT. Why? Because older students are typically stronger students who have had time to learn more.
Of course the answer is a very big NO (I am wondering if this web site would allow me to use a 50 point font). Your chances of getting accepted to Williams is just not high enough to do this. You can’t spend your life thinking about something that is not going to happen.
Really, commit yourself to doing as well as you can at your current school.