How can I get into Wharton?

<p>Hi, I am from china. Now I am admitted into Oxford College of Emory University. I must say it is a mistake that I click in Oxford College..... I didn't even look seriously on the application form. When I found myself admitted by a college that I did not even notice before, I lost my word.........
Now I decide to transfer to Wharton in uPenn. But I don't really know what test should I take more.
Now I have CR 680, Writing 710, Math 800 in SAT; Math 800, Physics 780, Chem 740 in SAT Subject test; 105 in Toefl. I am studying AP now and will take Macro Econ, Micro Econ, Phy B, Chem, Cal,Statistics and English Lang. I have heard from others that Wharton may recommend a GRE or GMAT. Would some one tell me which one to take or how high the grades have to be?
PS I have got great EC, and 3.8 in high school GPA. I am determined to study in business school in financial.
And another question: will the Oxford college losen my chance to Wharton as soph?
Thx</p>