How long have you been at your current school? You say you left your parents at age 17. Who is paying for this private school? Any chance they could help you find ways to fund your college costs?
A 33 ACT composite is not a slam dunk for acceptance into Ivy League schools where less than 10% of applicants get accepted. Most schools do NOT consider AP scores when considering applications for admission. Dartmouth, for example, does not any longer award college credit for AP courses.
I hope your net is a wider one than just the Ivies.