You are about 5 years too late.
Delmore Street Atlas was better than anything else has been. The only problem now is that the charts are terribly old. With a GPS puck it can do everything you might need or want and there is no end to the POI files that can be up loaded. I could (and did) plan a 8000 mile excursion including all the end of day places a year in advance. Yes, the plan did require revision the third day, but with SA on the laptop that is easy. Changes made (like fuel stops) can wrinkle through the rest of the plan and still be good.
If you are going to stick to the blue roads, it doesn't matter. But if not, you need it to still works when those little bars go away. So, if it cannot run without cell service, I don't want it. The is my stopper of RVTP. So, if you only plan to run blue roads and/or only ONP at crampgrounds with bad WiFi, then that is a good option.
The only one that will plan and still work as an enroute navigator is Copilot RV and there are problems reported with getting it to find the GPS on a Win10 laptop.
I plan to keep looking, but it is getting grim.
Matt - Was once a real navigator.