A bit on the fence regarding a quad versus SFH for the next move.

All I can do is not call that guy again.Also, lesson learned, it is almost always better to get concessions from a seller and do the work yourself, versus making the seller do repairs before closing! 

Reliability and Risk Mitigation go hand in hand there versus trying to hire the small guy in a truck to fix something. 

DFW is so spread out, I would be curios to understand if it may be just pockets versus other areas that might be more protected.

Make sure rental increase if not a national tenant goes up every year instead of blocked rent where the increase happens once every 5 years etc.Example 2% rent increase a year versus a 10% increase in year 6.

I will also PM you, as I'm looking to personally meetup with fellow investors, just as a way to network one on one, versus meetups that I'm not often able to attend.  

I understand some of the advantages/disadvantages of big versus small, but am having a difficult time deciding where the best starting point is for where I am. 

What are the pros and cons of investing in an townhome versus a single family unit?

You need to consider the risks he is taking versus the rewards he'll receive.

The banks will look at what you making versus what you are paying.