Indoor/Outdoor Security Cameras and Monitoring

I need help and direction of the best way to achieve my end goal regarding home security/monitoring. For the record, the home was built in 1996 and has limited availability to run wires for a wired camera system so wireless would be the best option.

I currently have CPI for a security system. The two cameras I have are horrible and I would like to be able to merge security, outdoor/indoor monitoring into one system.

My ultimate end goal would be the following:

-Doorbell camera
-3 outdoor cameras
-4 indoor cameras
-Door Sensors (if possible to connect to a system)
-Anytime video viewing (ie via an Alexa Show or some sort of video device that can be placed in the kitchen or centralized location)
-Security Monitoring (I have read that there are companies that you pay for strictly fire/police monitoring.


There are many wireless camera options out there that I like that seem like they would work. For example, I could but 2 separate Eufy/Arlo systems and a Ring doorbell and that would satisfy the camera need. Pair that with loading the app on the Alexa Show and I could view the cameras from that source, but I am not sure how the security monitoring would work.

Is it as simple as just purchasing multiple devices and pairing them with a SmartHome hub?

Is there a system out there that would meet my needs that I am just not familiar with? Is my best bet to stick with CPI for security monitoring and just get the wireless cameras for my own use?