That being said, they will likely not go after you and call the loan, but they very well could.

People in your market who are doing well want to network with new, hungry people and lift them up. 

You could, for the purposes of verifying that you are not renting to someone who is potentially dangerous or financially incapable of shouldering the burden of being a roommate, ask them to apply through Zillow so that you can see their background check, that also gives you the opportunity to have others who might be interested in being your roommate as well, apply.

I rented out the additional bedrooms to friends and family, charging them well below market, and sold when it was time for my wife and I to start our own adventures.

Pay attention to your weekly and monthly discounts as well. 

Depending how much of the neighborhood is a hot zone for renting rather buying, and which Property type is performing better than the other (meaning 1bd 1ba 2 floor renting out faster and much more consistently than a 2bd 1ba 1 floor), you can make your choice of those factors as well as other ones that impact your decision for what you wanna do with your investment.

well thats part of the job  checking out your collateral.. :)  

How well can you manage multiple roommates?

Those forms are generally well reviewed by local attorneys in regards to the local jurisdiction regulations.

My education background is in computer science, mathematics and some corporate finance, as well as have some internship experience in the quantitative finance space.