Admission Chances?

Hello,

I am an international student, and my friend and I both are applying to this university for their engineering program. I heard from my counselor that last year, Georgia tech only took one of the 2 students that applied there from our school. We both were going to provide an early application, however seeing as this is quite a selective school, and my friend has slightly better standardized test scores than me, is it better for me to improve my test scores and submit a regular decision application? Would that affect my admission chances in anyway? My friend and I both have only done the SAT reasoning test, as Goergia tech doesnt require TOEFL or Subject Tests. Should I maybe take the subject tests or TOEFL and then apply for regular decision?