Depending on the condition of things, and the tenants you install, that $70/month in maintenance may not even cover the turnover costs, which for me on a light turnover, can still be $1500.  

A good civil engineer is hard to find, and can be worth their weight in gold.

What advice would you have, or suggestions, around where to get started in terms of investment strategy given the crazy hot condition of the market?  

I need at least 1 because there is an air conditioning unit in the window spot that is no longer needed.Is this something that can be DIY?

I own a house which was bought in the 1980s, and it's no longer in good condition.

The better condition the property is in will accelerate the duration. 

They need to return it to the original condition or better. 

It's not that much $$$, but it will give you great insights into the health and condition of your drain lines - if you needed to replace your lines (either under a concrete slab or pier/beam foundation), it will take a good amount of money to get them repaired.

What are the SFR market conditions in Macclenny, FL?

Once you know the owner(s) and condition of the title, whether the owner had a will, who Ohio law declares should inherit the property, and what the owner's family tree is, then you can answer  "... who would inherit the house?"