Not working with a broker, open to suggestions.  

@Derek LeggettWelcome to Bigger Pockets.

@Brad Herb Costin makes a point about Cost Segregation accelerating depreciation. 

Seller financing How did you add value to the deal?

It will be difficult for you to learn how to manage rentals on your own, particularly in the most litigious corner of the world.I would consider working for a professional property management company if I were you.

Acquired the property with cash (to compete with all-cash buyers at the time) and then refinanced 2-3 months post-close How did you add value to the deal?

If you're going to go whole hog with several dozen a year as a business, it would probably make sense to have your own brokerage. 

And, you need to keep doing it. 

Hi All, what's been your biggest lesson you learned after getting into real estate.

Easiest and least costly is to go there and spend a week or so to get everything in order.Another one is to hire someone trustworthy and pay them to put it in their garage or in a storage unit for a month