I went a slightly different route. I started with drop arms for interior cameras, cribs etc. Then I had ADT install a pulse system for alarm and basic video monitoring for the exterior. After they finished I went back through after realizing the cameras sucked and upgraded all of my exterior cameras. After that I started installing Zwave controlled light switches etc and just connected them to the pulse system. I run 1 app(pulse) that covers alarm, exterior cameras, thermostats, lights, garage door, and a few other items. Expanding the pulse system as I have time. No issues so far and really like having 90% of my automation on 1 app and my interior cameras on a separate one.