college is only as good as where it can get you...your business adventure sounds interesting. If you are already netting approx. 50k a year why not see how far you can push it? (you already are making the same salary as a first year penn grad). However, if you think there is a cap on the salary, or want a college experience, etc. then go for it.
now for the chance. Your GPA is weak, SAT scores are great, your story sounds interesting (make sure the essay rings this), lots of community service, and URM...
I think you stand a good shot at it. Also, I believe you have to take a few SAT 2 subject tests, so just make sure you do well on those.