Should I wait to send new scores?

<p>I have all the necessary SAT scores (I and II) to apply regular decision to all of my schools. However, I plan to retake my subject test scores in January to improve them. I've already applied RD to 3 schools. Should I go ahead and send the scores I have now and send the new ones later or would it be okay if I just waited for my new scores to send them all out simultaneously? Thanks!</p>