Apply Sep 15 with partial app or two weeks later with full app?

Hey guys,
I could really use your advice. I'm a U.S. IMG who passed step 1 (250) and step 2 CS. However i took my step 2 CK after July 9, so my score won't be reported until September 16. Now my question is, should i apply on September 15 without my step 2 CK score and then update my application when my score is released? Or should i just wait until September 16 and apply then? I'm aiming for Internal Medicine if that helps.

Thanks in advance.

Apply Sep 15 with partial app or two weeks later with full app?