I have an Android M8 box and I am wondering what method I should follow to create a completely custom interface? I use Nova Launcher on my [rooted] phone and have customized all the icons and selected certain widgets so the interface is clean and uniform. I would like to do something similar on the M8 so I only have icons for apps I use (Netflix, Kodi, Youtube, Chrome) and maybe have a few widgets on the homescreen, such as local weather, maybe a “new movie releases” slideshow widget if I can find one. I know Nova Launcher will work for a 10-ft-display but if there are better options, I wouldn’t mind.

It appears to me that the M8 is already running a launcher on top of the base OS. I would prefer not to take the device offline for more an afternoon/evening while tinkering with different launchers and ROMs since my family uses it every day. I just want to streamline to interface and make it more aesthetic to my preferences but without bricking the device.

Are there any tutorials or basic steps I can follow for something like this?

Thanks!