After you file

Thanks a lot @ErnieS0 for active responses. I didn't get this clearly. Are you saying?

  1. I should snail-mail (8453 and 8949 (Capital gains)) the documents. Or,
  2. I should neither snail-mail nor ammend. Just wait and watch.
  3.  I should wait till 25th and then Ammend it
  4. Something else.