Even dry spaghetti noodles get thrown out if they've been opened.

I also "respect" the investor who didn't need to rehab, paint, drywall etc but just invested wisely and made his money while sipping a dry martini at an oceanside restaurant......

Keep your head down and your powder dry.

Baseboard hot water heaters are very efficient and provide a warm moist heat as opposed to dry heat.

You should be able to do the repairs, then Dry It In (tarp over it maybe?

House will smell like vinegar for a couple days but as it dries the odor will leave.

Wells can have parts that break and they can even start to produce at very low levels and in some cases go dry.

Or if a house already has dry wall that just needs a fresh coat of paint, that will be a lot cheaper than having to put new drywall in that will also require paint. 

After that you decide if you want the small town life in the Arctic (South Dakota or Alaska) the sun the beach and the humidity (Texas or Florida) or the dry heat of Nevada.

A well located and well run dry cleaner, convenience store, auto repair facility or juice bar can be a steady paying tenant for 20 years with rental increases covering the rate of inflation, or more.