After 6-12 months of use, you'll know it well enough to decide if you want to stick with it or start searching for a better system.

Definitely some hiccups along the way - there were some issues with the heating system which I didn't find out until it got cold, so had to work through that. 

What security system can be used so I can monitor activity there?  

The property needs a new septic system put in (which requires state approval).

He has a great system that works if you work it.CLICK THIS and scroll down for a graphicThe simplest, most trust-worthy process I've read about is generating leads from people that already know you.

I was planning on doing a full gut rehab with updates to electrical and all major systems.

I am a RE investor in DFW and have developed a system for off market deals through SEO.

My contractors' system has saved me many thousands of dollars and stress over the years.My son and I have contracted for several million dollars with contractors and subs, it ain't easy keeping up with them, material, labor licensing etc.

You could do a reno to your unit as extensive as a full remodel, or just a roof, HVAC system, and/or upgraded electrical service (you get to add it to the reno because it affects your 1 unit but it is great because that infrastructure improvement benefits the other units incidentally).

We knew several of the systems were older and would need replaced soon, so luckily those haven't really come as a surprise.