Gap TO strengthen chances

<p>So here’s the thing, I graduated from high school back in my country last December and wasn’t able to take the SAT before due to my enrollment in army and my volunteered community service in the rural areas of my nation . I didn’t perform as I expected, poorly 1480. I have been preparing to take the next SAT, and hopefully achieve a better score to compete for a place in the top engineering schools like Michigan, Purdue, VAtech, Urbana Champaign among others. However I would like to know how much this “gap” in my education will affect my chances of being admitted to such schools. Do I still have a chance to be admitted as a freshman? I haven’t enrolled to any university in my home country, dedicating my time fully to score higher on this test, so I don’t know if I can still apply and enroll as a freshman in the following semester, maybe spring semester? Or will I have to wait for a whole year to apply? And in that case, how much worse can that affect my chances of getting in? and how much do I need to score in order to be accepted there? I can pay fully for college, my toelf is score is 90, my gpa in my country is around 6/7 which is transformed into 3.O back in high school I took up to 17 different subjects a year. I am not a native English speaker nor did study at an international school, but I really want to make it in the US. Thanks in advance...</p>