What do to for a small 800sft home (2 bed 1 bath) that has no central air.

They stated my HVAC will actually run more efficiently without insulation - because the warm crawlspace air will rise in the winter.

I did this a few years ago and it still looks good as new, but I recently read that its not recommended to use fix-it-all on the exterior of the home because it can absorb the moisture in the air and further rot the wood. 

A Phase I site assessment is a non-intrusive site investigation and does not typically involve the sampling of soil, air, groundwater, and/or building materials.

See what I do not understand is imagine showing someone that birds can fly, by pointing at one in mid-air flying away, and then asking the person "OK IF what you are saying is true and birds can fly, how do they fly"? 

Heating, air conditioning, hot tubs, major appliance failure, septic issues, etc.  

I am looking to invest in a property near a beach in Florida so I can air b n b it and vacation there with my family in the winter.  

To make it easy I'll say property A and property B.The Indiana property went as expected, with some misc. things like changing the air filter but nothing out of the ordinary.For the KS properties - I had a call with the property management company owner and ops manager when I first bought the properties and everything sounded good, tenants are in place and everything is going smoothly.KS prop.

I have a collection of fake plants, pillows, bedding, air mattresses, pictures, etc. 

I have recently retired from the Air Force and have started into the world of business.