Second deadline FSU

Im planning on taking the October SAT which is on Oct. 3 but am scared that the scores won’t come out on time. The first deadline for FSU admission is October 15th which I’m confident that I’ll score at least 150 points higher. I’ve only taken one SAT which I scored around 1600s and really wants to get into FSU. Should I apply for the second round and will it significantly lower my chance?

You can still submit your SAT scores after you have submitted your Application. So apply before the first deadline and send your SAT scores afterwards.