I'm a huge fan of debt, properly used. 25% isn't sustainable.

The best (IMHO)you can do is seek out a tax and wealth advisor that you can work with so they can better understand your long term preferences as it relates to your estate and then give you advice on sustainable income into retirement (passive and/or retirement accounts), charitable preferences and heirs, if applicable.

Not sure how you can have a positive gross profit but a negative net income.This table though illustrates to me what many in the business already know....the discount brokerages that operate at a loss are simply not running a sustainable business model. 

Can your market sustain a $750-$800 rental rate?

If you are buying all cash then I would consider how many homes do you have and what kind of a hit can you sustain.

@Rachel H. well just real briefly, I plan on having a self sustaining source of income in rental properties to the point where if I wanted to leave active duty I can and be able to manage and Persue other investing full time.

My goal is to invest in Multifamily properties (2-4units) and eventually grow into larger apartment complexes (25+ units) as a means of creating a sustainable business that generates passive income to support my family, my community, and if God is willing then myself as well. 

So cash flow is key in this situation, and then location and property quality are important factors so you can sustain that cash flow. 

[But is that a sustainable model, the more doors you buy?]

They had their one big trick.And basically, the mortgage crisis was that big trick, and it resonates because of the impact.