I have a 2017 accord ex-l everything worked great except at the end once the app is uploaded it would fail to install. But the app was added to the whitelist successfully. So I just downloaded the app from the browser on the head unit then it installs just fine. I'm running Waze 3.9.9 runs great. Thinking of installing google play music this week to see how that runs at the same time with waze.
If you have Android Auto, which you should, Google play music should already be working through AA. It and Spotify work fine as long as they're installed on your phone. Havent tried Waze on my 17 Accord because i'm completely happy with Google maps through Android Auto. Cant ask for a better Navigation IMO. I also installed Kodi with the Fire TV (light) build and that works great as well. On the 17 Accord we have a little more room for installs, 1.6GB i believe according to ES file explorer. Having my Security Cameras for home and work on my HU is pretty pimp!! Next i need to install Google Calendar and see how the widgets work out!