Every year I sell properties for investors after they've been fined tens of thousands of dollars by their HOA for using the property as a STR against association rules.

Energy (propane/electric) costs annually are atleast double to triple for an indoor heated pool, unless it is a small fiberglass insert which guests detest as they are just a little larger than a hot tub. 

Understanding the local market, construction costs and legal regulations will be crucial to your success.

Who are most of you using for a background check services and the cost for them.

Supplies cost around $1000. 

I am a licensed agent also, don’t know if that helps, but we have cash to cover the cost and debt, just trying to hear from anyone that  deals with these situations! 

They have an option for an immediate transfer that costs a couple of dollars.

I am nervous that starting eviction for nonpayment would drag out her leaving and end up costing me more money in the long run. 

Thousands.

Getting started I wouldn't avoid single family homes, there are more of them, they cost less comparatively, and as Greg stated they are just less complex.