a lot of these other software's are really excel based . its better to already build off of your own with metrics that interest you in the project 

I would suggest that you find out the military bases nearest to your rental and see if they have specific sites, FB pages, etc. where they advertise.

I own a Vacation Rental Management company based in Branson.

After visiting the property, I decided not to offer based on what seemed to be many interior issues, a roof that’s seen better days, and more tenants living in the unit I was allowed to view than I was expecting for a 800 square foot space. 

You'll want to cover your bases legally and financially.

Sounds silly, but base level service is assume tax filing and compliance.

Communicating with agents and watching the market.How did you finance this deal?

That would be a big dictator of your closing costs as several of the factors are based upon closed price.

I sell insurance and am commission based so I would like some sort of passive income.

But you have many options based on what you've provided here.