Monitor these areas very very closely.

You can lease these for a small amount and the gas company can monitor it and fill it as needed. 

I also got decibel monitors so when my guests were falsely accused of partying until 1:30am, I showed the monitor report and that was the end of that. 

Bigger Pockets has some great state forums and usually there are good locals that monitor those.

St Paul city council hasn't yet figured out what it all means and how they are going to pay for the staff to monitor and enforce this. 

If the numbers on the property work in the calculator app, then you plug the right four people in, hey, the rest of the equation works AND YOU GET RICH QUICK AND EASY.This idea is just incredibly seductive to anyone who gets paid to spend ten hours a day typing on a keyboard in front of two or three monitors in a 6x6x5-foot cubicle.

If I were you I would continue to save money until I was able to invest in my local area where I could monitor the rehab and ensure the area is a place I would want to invest in.

Open a pic on any decent large desktop monitor and zoom in a little, and you can learn much more detail than from an unstable video.

Also do I need to send out a notification to the tenants that security cameras will be going up and that their intention is for security reasons, not to monitor the tenants?

It has more to do with screening, selection, how well the landlord monitors/inspects the property, and chance than length of stay.