SaaS Development

What I'm looking to do: Build a website with a cart for 3 different levels of services. When services are purchased. Program an Echo dot to be able to work with certain commands, once command is said. A general pathway will be followed once pathway is set. I need to be able to push a message back to the user. I also need to be able to push an every day alert to the dot that allows a user to respond and the correct pathway will be performed. The next is I want to provision an Apple Watch to work via command. When command is said to watch it shows an alert on backend that shows me users GPS location and I'm able to push a message back to the watch user. The backend will contain info on customer such as name, address, dob, cell phone number. I'll need be do reporting integrated into it. High priority given to people who know how to build emergency service related applications. This will be ongoing project that will lead to additional features after launch.