Specifically what are tips for choosing tenants that will live in harmony?

Having plans established quantities and eliminates the unknowns. 

Hello BPI know there are rules pertaining to originating notes (quantity/frequency) with Dodd-Frank.

Most builders are only able to make a profit because they build many homes at once and get materials at a steep discount due to the quantities they order.It's not like flipping, where the property is there are you are just improving it, you will have many costs such as connecting the property to the local utilities which could be inexpensive but can also be (more likely) crazy expensive, it all depends on the land you purchase and the proximity to current local utilities.The lure to jump in can be hard to resist, but take your time and find the right property. 

I have the property list but I do not know how to find their phone numbers for large quantity of properties.

As you get experience, work your way up in the quantity of your apartment complexes.Being able to use the cap rate when adding value gives you more "bang for the buck". 

Also I think that it may allow us to aquire a larger quantity of traditional home loans since in the future my DTI will be much better ;) ...

The only large quantity of properties in my under 200k price range are studios.

Have a "contingency" clause in the purchase contract that if something comes up unexpectedly you can "walk away" with no penalty.Work your way up in quantity as you gain some experience. 

I've spent time on many different forums as interests change and I agree that the upvotes help to keep the quality vs. quantity of posts in check.