You have positioned yourself exceptionally well at your age, you don't want to mess that up by jumping too quickly.

"limited access to capital until retirement age" - I don't like this statement.

Make sure you know the EXACT age of the roof from the seller and if not, you might have a problem even getting the house insured for roofs older than 15 years old in some states5.

Today is an age the USA has long not seen, COMPETITION.

@Ari Lagunas I would chose the 95% OO loan over the higher FHA LTV due to fha sustainability rules (applies for more than 2 units), fha stringent criteria regarding condition, and fha rules regarding PMI.  

Then I read in your profile, 500 units by age 24?

They did this while they continued to work in plumbing and dry cleaning until they retired at age 62.

Age group 4 and up.  

I am starting out later in life (age 50) and looking to have some passive cash flow and hoping for appreciation over time. 

@Isaac Ballew I graduated back in the stone age with a finance degree and found my way eventually in Real Estate after some corporate jobs.