In this case it's my thought that having a mortgage on your primary residence gives you a $0 tax break because you could just take the standard deduction.  

I receive a call on the 14th and the lead guy let me know that one of the friends had died and they wanted to break the lease agreement.  

He was an able bodied 25 year old.

It could be body language.

Many of the smaller properties in MN you find on the MLS are break even at best.  

You can only break the lease if they do not perform, i.e. late rent, noise, etc.You can always give them an incentive to pack it up.Good LuckGino

However, taking it a step further, if a neighbor kid is trespassing on the property and somehow breaks their leg will I then be needing builders risk for that possible liability??

Put your company name and Georgia Board of Residential & General Contractors license number in the body of the message.

Look for the map feature which breaks down individual subdivisions by things like income (not crime unfortunately). 

More tenants to deal with, more items to break/repair in the quad then the duplex.So for me to choose the quad I would desire it to have close to twice the benefit of the duplex (i.e. twice as much cash flow and/or twice as much equity gain).