If you want Stanford you should be studying for the SAT or ACT and taking some SAT 2s. A 30 is below their 25% I would think. Their acceptance rate last year was around 6% or so. Please realize that with all As and a unique story you still may not be able to be accepted.
Is money an issue? A complete non issue (as your parents will not notice the expenditure) or somewhere in between? Private college is $65,000 a year. Run the NPC if you need financial aid both as a freshman and as a transfer. If money is an issue and you are not eligible for a lot of need based aid at Stanford, then you may have your answer.
Any top private will most likely require a 2 year residency for an undergrad degree. Most state on their web site if they accept dual enrollment classes.
I think you should figure out your career goal and work backwards from there and see if you are on track to fulfill the prerequisites. If your high school has a good guidance counselor you may want him to contact a few schools on your behalf to get the information and their reaction to your situation.