But now managing my own stuff and now managing for other people, property management companies aren't these huge profit centers unless the company has crazy efficiencies or they nickel and dime for you for every last thing.

They are very efficient and affordable.  

For long-term rentals, though, an LLC is generally more tax-efficient.

It would be nice to be able to search, for example, on properties where the mailing address differs from the property address or for properties tagged as non primary residences for targeted tired landlord marketing.

Later on in my investing career when I have less time to deal with the day to day I will hire a PM and have a good understanding if they are running my property in an efficient manner. 

You're a "slumlord" when you don't address them.

The money you receive from refinancing isn’t taxed as income, since it’s considered a loan, making it a very tax-efficient strategy.

Since we will likely be on the go but can have our permanent address be set at the property we purchase.

CT requires an Architect (or Engineer) for projects of this nature, especially a building of this age where it's likely there's structural/framing items to address.

The reason I looked at cash flow from operations divided by rental income is that it should show efficiency in getting cash flow compared to your rental income.