Nelson Nash developed the concept in the early 80s but the product the concept utilizes has been around for much, much longer.Since you brought up term insurance (which is temporary w/ no cash value accumulation or dividends), oftentimes a policy will be supplemented by term insurance in the form of a rider that allows one to increase their death benefit such that they can store more cash in their policy without triggering IRS MEC limits and therefore be subject to tax hits.The concept and its value proposition is incredibly misunderstood (and sadly often abused) but the reality is it works.

Vacancies are down to almost nothing and we are starting to accumulate a wait list. 

The answer probably depends on your long-term goal and how long the long-term means for you.You are correct that if you put 30% down on three properties, you will then have to wait until you accumulate enough cash via appreciation, cash flow, and savings in order to buy the next property. if you execute a brrrr, you would be able to keep going. 

@Joseph Mulero congratulations on your first house-hack, and the excellent accumulation rate! 

I am considering selling ~$300k in stock that I've accumulated over the past 10 years.

The lower the DP, the less you need to recover, and the faster you should be able to recover it.Equity's main role, is to accumulate through appreciation (not paydown...to slow, and too small),...and then cash out to move forward into larger property value. 

Over three years, the rental property accumulates $100,000 in net passive losses, which remain suspended due to the absence of passive income to offset them.

Those who do know what “enough” is will find their journeys much faster because they levered the accumulation years.

After listening to 100 podcasts I felt I had the confidence and game plan necessary to start accumulating multi-family homes.

ROE is what most talk about.I have never had $250k cash to invest in the market not that rich or high income but have accumulated with effort much more equity and then cash flow from years of ownership.