when buying a place say in the central Florida area, can you see and ROI on buying a place that is more geared towards a vacation place. A place that would have HOA fees plus figuring in for property management or do ...

Yep she qualifies for any and all financing that a regular citizen would because of her "permanent resident alien" status. 

In any event, from looking at your photos, I think they'd have a really hard time convincing a judge that domestic violence caused the dog to urinate and defecate on the floor and/or caused someone to write on the wall in permanent marker. 

However, I know I don't want it to be permanent.

Abatement or Remediation:  Many contractors will try to "sell you" on encapsulation, which is acceptable, (such as "painting it" with a recognized/certified sealant)  but leaves the potential there... and again it is ALL about disclosure...Abatement/Remediation is the more costly but permanent solution.... if is a roof, the roofer should be certified in the removal and disposal.

We're looking for a more permanent solution to get more of our money out.

If you allow pets to visit, how will you know when they are permanent or not without parking outside the house every day?

That should have a limit that provides enough coverage to replace those items you own in the building that are not permanent (Stove, Fridge, etc.).  

I prefer the military family with only one concern that there may be the possibility that they end their lease suddenly with a  permanent change of station (PCS) The military family was transferred to our area this year and they told me that would stay here for 2 more years.

IMO, these are higrade improvements for PERSONAL homes, not a rental - - even a Class-A.Granite is POUROS and will  take permanent stains.