We operate in a broken system that is ripe for abuse and fails to protect us.

So, the solution to the problem is built into the system.  

I needed $35,000 for a new heating system so the bank gave me $28,000 (80%) in a business loan for 60 months which has no prepayment penalty.

Every system you try will have flaws or you'll salivate over a feature that shows up in other software.

Anyway, as far as camera systems, I would think a simple Blink system and wifi would work for what you want to do, with something like the Schlage encode for a locking system.

Most landlords are willing to do cash for keys so if they don’t accept that, they’re trying to game the system.

If looking to scale flips and create systems around it to minimize your time and involvement, I'd highly recommend putting a team in place that can handle the day to day operations. 

There could also be increased ongoing costs for upgraded internet, cable TV, etc.2. 

I just know that when we had french drains installed around the house foundation and redid all the drainage systems in the yard they were 4' deep and they made sure that the slope was sufficient for the task.

Also, we have a team of fifteen employees now, with processes and systems to scale.Given my track record and ambitious goals, I'm exploring ways to attract investors for fix-and-flip projects and rental property investments.