@Peter Lee
It is terrific that you are considering real estate investing at your age.
It’s great that you are not only seeking advice but also looking at counter-points. This person who is adamant about investing in Manhattan is likely well intentioned. However is viewpoints on RE investing, in my opinion, are narrow and misguided, not to mention unrealistic for a middle-class or new investor.
You are an aspiring dentist. If you are able to graduate with little to no debt and begin your practice, you will be further along then 90% of the population in terms of financial earning potential.
If I were you, I would:
1. Continue to study real estate investing, alongside your college education.
2. Take SOME kind of action ASAP. (This could be before or after graduation. If financial and time constraints would diminish your ability to graduate with high grades, wait) By Action, I simply mean her your feet wet in real life real estate investing in some capacity. Just be smart about it. I am nearly 40 and I screwed around for twenty years before taking action Don’t be me! Strive to be an eternal learner, but not an eternal procrastinator
3. Consider this: if you were to live well beneath your means during the first ten years of your dental career, and make smart RE investments along the way, you will be most likely SET FOR LIFE!
Best of luck !