<p>There is not much more people can say. Your extracurriculars are good and unique, but your academics appear to be the weak part of your application (for Stanford). You will ned to have top scores if you have a weaker transcript. So without knowing your scores, it is difficult to give an opinion. And even if you have top scores, everyone’s chances are quite low…
And yes, deadlines are different for schools. Read specifically what Stanford says about when your scores are due.</p>