It was not advertised back then, but it's now mentioned in the utility website citing it as a conservation measure. 

We're aiming for full time living, so systems will be regularly used.

The 1970s had a lot of weird cost cutting measures in construction.

Once I have adequate cash flow, I'll aim for other markets that provide appreciation, nearly all experienced investors I've talked to explain that's where the real money is made in real estate.  

I would aim to refi it at that point to avoid all the mortgage breaking fees.Have you considered other ways to access capital?

Even measuring the lot would tell you.

I'd be curious to know what other proactive measures people are taking with properties in at-risk areas.Also, I have 2 insurance policies, one is your standard property insurance, and the other is a liability-only insurance designed for short-term vacation rentals.I'm curious what products or services insurance companies might offer that can support risk-mitigation.

My aim with this post is that I would really like to find a mentor to talk things through, learn from, and of course be re-grounded when I'm getting out of perspective.

The CapEx and Maint could go lower if the property is in good shape or is newer but it is a safe measurement when quickly looking at deals. 

The measure of that thesis is CoC or yield.