Well, good job on all of your hard work! You have quite a resume. :]
Still, if you're going to "dream big," as they say, you're going to need to improve those SAT scores... I'm one to talk; my SAT math score is painfully mediocre! I recommend studying up to the best of your ability, and I wish you the best of luck in retaking the test. Your SAT II scores are awesome!!
Your status as a minority definitely matters in some places, but in others it will not... Sometimes I question the integrity of certain colleges. For instance, according to the Princeton Review, Stanford considers your ethnicity more than it does your work experience. Yet Berkeley, according, again, to the Princeton Review, a school which is known for its overachieving minorities, does not look at race. Personally, I do not believe this to be true. A white friend who scored a 2400 and had a 4.4 was denied, and a black friend of mine with a 4.0 was accepted... This link is pretty interesting, but it is about Berkeley:
http://www.ceousa.org/content/view/485/100/
If you look into it, be sure to note the date.
I'm not sure about you being a first gen college student, but I will be, too, so I hope this works in our favor! :]
EDIT: Sorry if this is stupid, but how exactly does a seven-point scale even work?