Help!! My chances at USC or Stanford?

Class schedule:
9th
-AP Human Geography
-Spanish 1
-Honors Biology
-Honors English
-ASB
-Honors Geometry
-Tennis

10th
-Honors English 2
-Honors Chemistry
-Spanish 2
-Honors Algebra 2
-Journalism (Business Manager which includes calling/emailing people to place ads in the paper, and dealing with invoices and cashing checks)
-AP European History
-Tennis, Track and Field (Disc)

Currently I am a sophomore and have a 3.83 unweighted and 4.49 weighted GPA for 9th and 10th grade combined. I’m ranked number 25 out of 552 students in my grade, planning on doing full IB Diploma starting next year, and got a 1180(91th percentile) on the new PSAT. I am going to be in Key club, NHS, and CSF for all four years. I am planning on being a Nordstrom Fashion Ambassador my Junior and Senior year. I am a Chilean (Latino) girl who was higher class when younger and then dropped down to lower class after having to be homeless at age 8 and then living with my grandma for 4 years until my mom was able to get a teaching job and get us our own apartment. My parents became divorced when I was 11, after which my dad has been in and out of living with friends, a motel or his car for the last 5 years. When I’m older I plan on opening up my own high end womens clothing store with 10-20% of the proceeds of all sales going to low-income or homeless families due to the fact that I never want any child to go through what I did. I plan on turning my clothing store into a fortune 500 company and along with real estate investments, I plan on making myself a millionaire maybe even a billionaire. I have very big dreams as you can tell. I am a very determined, ambitious, driven person. Funny story, when I was in fourth grade I wanted to buy a pair of zebra, pink accent flats, it was a dark time when it came to fashion choices, and my mom didn’t believe me that I would wear the shoes. We were in the store arguing for 15 minutes at least and she finally agreed to buy me them even though she still didn’t believe I would wear them. I wore them everyday until they fell apart just to prove my mom wrong. How good of a chance do I have at getting into Stanford/USC?

stanford is, as im sure you know, very hard to get into. an 1180 on the psat is approx a 1270~ on the new sat which is approx an 1860 on the old SAT, which is far from competitive for stanford and usc. so, next year, when you take the sat or act be sure to study a lot. aim for a 1520 on the new sat or 34 on the act, and your scores will be good enough (although obviously people get in with lower scores than this). your gpa is a little low, but if you work hard next year you can hopefully raise that a little bit so it shouldn’t be an issue, same goes for your rank. ib is great. your ec’s are a little weak, to be honest, since key club and nhs are two of the most generic ec’s out there (i don’t know what csf or nordstrom fashion ambassador really entail so i can’t chime in with regards to those). clearly you’ve had some life experiences that make you stand out to an extent, but i would definitely try to add some more meaningful ec’s