@Roy Gottesdiener What you don't cover is the growth potential for the six single family homes you currently own.  

Pressure treated wood with ground contact is seems common from what I've seen.

Your best best is to find a local real estate lawyer to handle the legal transfer of the wooded land that your mother wants to give you.

I don't buy older wood houses - too many issues with rot/termites/fire hazard. 10.

I would but so far (knock on wood) me explaining the consequence of the eviction to the tenant has worked every time.  

I barely hear from my tenants at all actually (knocks on wood). 4.

To add: you have a historically strong and consistent tourism presence, limited land/STR allowable areas, highly liquid property compared to selling a cabin in the woods, all 9 classes of visitors in the STR sector, and appreciation.  

Have an expert look at it.I understand that you want to avoid setting untreated wood directly on concrete because the concrete attracts moisture that rots the wood. 

mainly cosmetic: stained floors, repaint, may need to replace carpet with hard wood, resurface cabnets, new shower, repatch water damage. 

Quote from @KiKi Wood: We just bought a SFH home because of our budget, but I totally wish we would have house hacked!