@Dev_SS, congrats on your new tablet. I would not recommend side loading the Google Service as it drags the performance down over time as many have observed. I’d recommend Fully Kiosk as the kiosk browser for loading the dashboard and you can download the Fire OS version from the link below.
@josh has summarized some common Fully settings that you may be interested.
Ring does have Fire OS version, and you can even use Rule Engine to load ring app or different dashboard pages using the Fully Kiosk DTH when a certain event occurs. See the post below for example.
If you can share the use cases for the other apps, we may be able to come up more specific solutions.
