Best In-dash nav and camera system for Minnie Winnie?

We gave up on a dedicated GPS for nav and now only use our phones with Google Maps. You can easily download maps for offline use if you know you're heading into an area without coverage or don't want to incur data charges.

I also mounted my rear view display on the stock mirror location for our Winnie Outlook. The stock mirror was good for checking up on the kids and dogs, but that was about it...