It is harder to find good information if the forum is cluttered with low value information. 

When you own a couple of units, the odds of there being unexpected vacancies that overlap each other are usually low, but when you acquire more and more real estate, the odds of tenants moving out around similar times increases. 

Apologies if I missed prior posts asking the same thingI want to take advantage of the low down payment requirement however need to find a lender supporting this loan type.Can you please provide any recommended lenders for Homestyle loans (or even 203k) that serve DFW? 

So assuming your son has low debt, then he should be able to qualify for a house in the low $300K range. 

There are quite a number of things that can make utilizing an FHA loan more difficult such as more barriers during appraisal, appearance of low qualification/little cash, typically longer closing period, likely higher interest rate, and PMI cannot be dropped without a refinance if 3.5% down.That said, just chain 5% down conventional loans, and make sure your duplexes pay for themselves.  

I think your PITI estimate in both cases is low.  

There is a company names Hemlane that offers that "light PM" service that may be interesting for you instead of a full blow PM company that may cost 7-10% of revenues.

Seems like a low risk strategy for you to start taking action on your dreams, which is the crucial ingredient towards reaching FI. 

A duplex strategy is a low-risk entry, saving on living expenses.

Really interested in investing in this market and would accept a relatively low return (or even a break even scenario because i believe in continued appreciation potential here).