Myself, I specialize in Section 8 and low income properties.

I don't invest in section 8 housing and also have no desire to so maybe I am biased.- I live in Raleigh, 10-50 unit complexes will be hard to come by unless you're okay paying a premium.

You might be surprised with the amount of "trapped" equity you have in your current properties that you might be able to "unlock" to finance your next property. 

To invest in Section 8 housing, look at areas such as Cleveland, Columbus, Cincinnati, and Dayton, choose safe neighborhoods, study Section 8 standards, analyze property types, and explore financing choices.

I have offered to provide snappy traps for tenants in the past.

Because if I'm trapped going larger than $5M in the future, I'd probably look for something smaller that I can control now rather than always having to use it in a syndication

I hope this helps keep others from falling into the same trap.

The biggest problem was that the home was infested with insects and rodents.

What makes you think starting in Section 8 is a good idea?

Beyond real estate investing, BiggerPockets Money has great episodes on how to avoid the middle class trap with your investments - ie how to structure your investment best so that they're not all locked up in accounts with penalties until you're 65.