Most would suggest using 10% Vacancy, 10% Capex AND 10% maintenance.  

What fees do they charge for their services?

From your profile pic in uniform, you might want to explore whether you meet the service requirements to qualify for a VA loan.  

I own a property management company that handles every aspect of your rental even evictions and maintenance issues.

When it comes to the home remodels and renovations, there are many construction companies offering specialized services.

I use BofA for my Carpet Cleaning business just because they have merchant services so I can run cards and have it next day in my account.

Disclaimer: I work for a rent payment service.

Whether through representation, wholesaling or investing, I will work hard to provide the service needed and help all parties profit.  

I'd recommend determining your true return on your existing house, including $1,700 rent, less vacancy, management fees (should include whether you self-manage or not), taxes (will increase in SC more than your calculation), insurance as a rental, maintenance and cap ex (often ignored or under-estimated).  

The funny thing is at least half the properties are not "passive" but stress filled with lots of activity (frequent maintenance costs, turnover, vacancy, eviction, cap ex)   Decisions have to be made sometimes with little time or little oversight when doing it so far away.