This will be a very rewarding journey! 

And if you wouldn't take that deal, you probably don't like money as much as you should.Using leverage for real estate holdings is obviously a bit different (more risk, more potential reward), but the underlying mechanisms for generating higher returns than what you can get with your own cash are exactly the same.Based on that, it's hard to argue that leverage itself is "bad".

Each LLC must past the sniff test as a real business operation.Finally, I would say there is a cost / benefit and risk / reward to any decision.   

Overall I view SFH investing as much higher risk, all your eggs in one basket, and therefor the "potential" reward less attractive. 

What sort of income will other buildings produce and are there alternative investments that provide superior returns when weighted in terms of risk vs. rewards?

But so is the reward. 

They rent their house, and they keep all of their money in the United States, transferring small sums to their account in Ecuador when they need it.I'm not opposed to high risk, high reward investing, but you should know what you're getting into. 

Using this method, the reward at the end is 100% guarantee that your tenants will be angry with you and you will be the bad guy.

I'm using the Bank of America Cash Rewards Card.

But if the stock is fundamentally sound, you're likely to reap a great reward for your consistency over time.DFW is fundamentally sound (of course some places are better than others).