So I have a question. Is your Incomplete/Not Finished grade STILL on your transcript?
I say this because... didn't you have an opportunity to FINISH the class and receive a grade that is not an F? You imply "circumstances..." but are you prepared to talk about those circumstances in your applications? It just seems stupid for a person with straight A's to just let a class lapse in their freshman year (even if you were acting like an immature freshman). EDIT: Okay, you gave context... you took some awful advice by taking the zero the first time, and I wish you well with the retroactive withdrawal or petition for a course retake. For an essay, even as you are trying to leave the school. You still need to have your prehealth team advise any statements you will submit to explain academic challenges or "issues" on your transcript, even if it winds up being innocuous.
Who is going to take care of your brother while you are going to medical school? The real issue I have with your application is that so many of your activities draw inspiration from your brother. That's all well and good, but what are YOU really interested in as a physician? I expect your challenge will be to move the PS spotlight from your brother to YOU... and your activities don't help you achieve that balance from what I can tell here. You wear the white coat, but I am worried you willingly want to cast yourself in the shadow of your brother, and that may be to the detriment of understanding other patients you will encounter.
I appreciate your openness about your PS? strategy focusing on being a naive and lost first-gen student, who nevertheless succeeded with a 3.8/521. It's a recipe for self-sabotage to devalue your academic achievements with your metrics and experiences. No faculty member sympathizes with (medical) students who don't understand the student handbook.
Do I know of any school that will kick out a 3.8+/521 for an Incomplete grade? No, I don't, and no admissions dean wants that scrutiny without something else that warrants eliminating such a candidate (mission fit, integrity issues, lack of community service). In fact, the only difference from a 3.8 and a 3.9 would be institutional academic grading policies IMO. (The GPA/MCAT grid I think lumps the 3.81 to 4.00 uGPA in one group, right?) So stop whining about not being perfect... that would certainly turn off some of the adcoms I worked with.