let me say something not that encouraging but more realistic. With that GT, there is a chance you won't make it the 2nd round of application review. Possibly, you will end up with a few ADs without financial support. I'd like to suggest that you start to contact those professors who are doing similar research to increase the chance of stand out. To be honest, there are tons of applicants at your level. So please try your best and stay confident but more importantly stay strong if things go south. Good luck!