It will alert you real time on your phone when an alarm goes off and you can pull up the live feed of your cameras whenever you want.Search Amazon for "Home8 Oplink Video-Verified TripleShield Alarm System" 

I'm currently grinding 50+ hours a week as a nanny/household manager saving for my next down payment.

 :)On #5, I knew some landlords use Samsung Media Hub as center piece for remote control of their thermostat, security camera and digital key.  

Well, I'll pack my camera and go explore Beale Street if I decide to cut out early. 

Also putting up surveillance cameras and signs to avoid any further issues and deter anything else from possibly starting.

I have been guilty of staying cheap in areas that were cheap...never buy properties in bad area is the best lesson...I had  camera installed and saw thief cut the main power line and steal the cameras in Joliet and police reports and police is waste of time and insurance can be expensive...I have had simplisafe wireless alarm system that is great for identifying who comes in and leaves..because you can assign codes to each worker.if you could have a combo system of simplisafe  or another wireless system with a camera system combo that captures who is going in and out might be your best option...you need alarm system with video capture because we still have people leaving garbage in parking lot that alarms can't prevent...I have not come across anything better that has active alarm system with videos.

If the building is secured (ie front door locked), then install cameras to monitor the area where packages are left. 

You might consider having a plumber run a camera through the lines to make sure there aren’t any other plumbing surprises awaiting you.

Exterior motion-activated lights (three with wifi cameras -internet not included) are on all four sides of building. 

Paul MN, I'd like to add wireless doorbell options for tenants + cameras for security in front/back/garage area.