If this property is hard to rent, or is functionally obsolescent (only 1 bathroom, no yard, etc), or has deferred maintenance that will be costly, or is in a location that is not appealing to Tenants, then maybe a sale would be a good option in favor of a property that has better Tenant appeal, which will likely increase rent and avoid long vacancies in between Tenants.An option to consider....

But a really good property, for what you can afford, in a good location like Charleston and wait. 

It is located in an area that attracts college students/employees, working class families, and military families.

My area for example has to have certain signage and an emergency shut off button located directly by the hot tub. 

But after a flip, you will probably sit on the market for a while depending on the location approximate nearest city. 

Hi Michael, I'd be glad to help answer some questions for you and/or locate a duplex that would work well for your goals.Feel free to connect!

I am located in Western, North Carolina, right outside of Asheville.

Your new place should turn into your new business location as well. 

Would need to know about locations of your buildings and current rents to see if there is anything that can be done now to get numbers a bit better.

Its going to really depend on your location, scope of work, and finishes.