They have different variations and some have thermostats built in which makes it very easy. 

During the home inspection the thermostats in each unit was increased drastically to confirm they were operational3.

And what system for videos and thermostats?

Maybe some day, but for now you would probably need separate services for most systems (Nest thermostat for remotely controlling HVAC, sperate system for pool, etc.)You can of course have some systems bundled together if they are the same brand.

I have the Honeywell T6 thermostats everywhere which hook up to wifi and let me control them through my phone.  

@Chris SeveneyHe said it was set to 74, but he checked thermostat around 2am and it was showing 78. 

<--(Check this)Have an intermittent outdoor unit fan issue and it will not cool properly.Have a defective (or improperly wired or wrong) Thermostat for the system and it will not cool properly.Not all techs are equally as good--or equally as honest.Good Luck!

I've heard the cleaning company is the biggest piece in doing it yourself and this piece is a MUST have if you are going to do it on your own and are not in the state.We plan to install all smart devices, keypad, thermostat, cameras, etc to help monitoring it and managing it a little easier.Anyone have any advice on using management companies and how did that turn out, especially in this part of FL?

I have been researching smart thermostats and smart locks for homes with the intention of placing them in my long-term SF rentals.

Get a locking, programmable thermostat so you don't come home to all windows open and heat turned up to 90.