Many not only make enough to cover their expenses, they have additional money which accumulates allowing them to further invest.For these investors, additional monthly cash flow is not their goal.  

We can pay property taxes and we would accumulate funds in a separate trust account. 

If you are looking to continue to accumulate properties, I would refinance due to the current low interest rate environment and lock in now.  

In many cases if you change jobs you will still have the option of having them manage the 401K $ that accumulated while you were at that company. 

How did you accumulate mentors?

Takes a while for the snowball to start accumulating and I was lucky to have "seed" money.  

I've got my entity set up and have already begun contributing cash to accumulate to buy my first property (should be able to pay for my first $50-75k property in the next 2 years).

I have been fortunate to have found one and I am sure there are excellent ones in Austin as well.Please note that these trusts are mainly useful after you have accumulated significant wealth, so I would not rush into them now if I were very young and yet to accumulate much wealth.

Who is getting the equity accumulating?

Check with your accountant about other liabilities like accumulated depreciation that will need to be recaptured on a sale.