Also go online to loopnet and crexi and look up similar properties to lease.  

The amount of downpayment requirement insures buyers having "skin in the game". 

As I mentioned I finished my post graduate education 50 years ago, so my experience may not be so relevant in today's world, with so much of the information we received in college courses available on line for free.  

But we would still be guessing.The game-on for you is to get your GC out to the property and give you a budget beforre the proeprty gets snatched by another investor.

Use online tools like Rent Savvy, Avail, Rent Redi, Apartment.com, Angie, Thumstack.... to manage yourself and learn. 

It's simply a numbers game. 

Based on your advice to newer investors, should I play the long term game by paying off my house early (2030)?

Tax shelter schemes, partnerships with foreign partners and accounts, partnerships with hundreds of members, returns with blatant mistakes, entities in questionable businesses, like gambling, drugs, online video sales, escort services.

A property manager that can assist with rent collection, tenant screening, maintenance, and run an online ledger for us to track expenses.

I would never form an entity with them when I can do it online with a firm that charges a fraction of what they charge).