If I stuck with the original mindset, it would have taken me at least 10-15 years of investing and still working W2 to achieve a meaningful return that I could live on.

However if I do a BRRRR I can achieve infinite return by extracting all of my investment.

However, once I committed to it and viewed it as a business, I was able to achieve FIRE after a couple of years of hustle.

I want to become a multi-family investor to achieve financial freedom.

But that's what investing is.....deploying capital to achieve a return based on risk.

Yeah, we both want to have the tallest buildings, but we don’t have to tear down everyone else’s building to achieve that.

Do you have a family member or friend who's achieved what you want to achieve?

Using the 50% rule (taxes, insurance, Capex, maintenance, vacancies, property-management), that should give us ~19K/month in pre-tax profits that achieves our 10k/month financial goal after-tax and adjusting for inflation.Our assumption is that building new-construction would reduce capex & maintenance the first few years. 

So presuming you are on the "add one rental a year plan" after maybe buying 4 with the money you have, I would think it would take a number of years to achieve that retirement goal - but your mileage could vary depending on how much income you need to live on. 

Highest ROI, especially in markets that appreciate faster than inflation, is achieved at highest leverage.