@Hill A. I've bought a few SFR in downtown Wilmington, NC in your price range. Most were bank owned, wouldn't qualify for mortgages, and needed some rehab - typically at least $10k in rehab, some more than $20k.
I think location is critical - I like to stick to properties and locations I'd be willing to live in. There are plenty of run-down houses on seedy blocks - I avoid those. I also rehab my properties to slightly higher standards - I like to attract better tenants, for hopefully less problems, less turn-over. These properties have worked out well for me.
I avoid Condos & HOAs for the reasons you listed. I like modest, but attractive, properties that will attract better tenants, I don't like issues with neighbors, high turnover, HOA restrictions, Condo fees, etc.
If you'd like a recommendation for an agent and property manager very familiar with less expensive Wilmington properties, I can highly recommend @Rachel De Faut. She was my buyer's agent for all my properties, and acts as my property manager. She also has contacts for rehab.
You can also message me with any questions.
PS Thanks for your service. Semper Fi.
Joe