I managed remotely using automation integrations with Mailchimp, Zapier and other home automation systems, but the most important thing is to just make sure you have a great cleaners who will be communicative to you if anything looks off. 

I got a security system installed and some lights outside.

Get your systems right, track your numbers, be smart with your money, get educated.

If you ever need advice on anything, I have some great systems in place to make it more hands-off.

and remember you will have to anti-freeze your system for winter months.

Shouldn't unit 2 be able to make a motion and vote on, say, no fines over 25 cents.

Best practice for screening tenants is to come up with a system that is used for every applicant to make sure that each application is treated the same.

I'm not an attorney, but I believe that is a basic premise of US contract law that all States have by virtue of being part of the US legal system. 

Where do I vote for best thread ever on BP?

You have to consider purchase and installation costs, plus any maintenance over the life-span of the system.