Confirm this and if that's actually how high the taxes are there, start looking for a new place to invest. 

Verify your rehab costs and confirm that there will be no surprises.

Specialized software is available to perform these searches.Have any landlords within BiggerPockets used social media content as a tool to screen tenants?

We were wanting a software tool to sketch out our floor plan.

The ultimate goal is to eventually start using our management software to automate annual rent increases.  

Has the city and/or a structural engineer confirmed it is sound and can be built out?  

If you've talked with them and they've confirmed there is a state law preventing HELOCs on rentals, please share!

Best software to track all this for a decent price?

(I am not an attorney and I'm not giving you legal advice, but see this video for more info: https://vimeo.com/356466356 - Note that the video is based on Florida, so you'll need to confirm the notice requirements for Georgia).Bottom line: You probably need to seek legal advice from a local attorney on this matter, and getting an eviction through the courts right now may be a tall order. 

Confirm if there is a written lease and ensure you comply with the terms.