Ken, thanks for the tip and the recommendation for Winslow.
I'm planning a trip from Pasadena to Memphis mid-March, and have been working on the segments for the trip. EV Trip Planner is a pretty good tool, and Winslow looks like a better stop than Flagstaff for equalizing.
My big hole is I-40 through Arkansas, where there's nothing between Oklahoma City and Little Rock. I think my last overnight will be in Denton, TX.
So that would make my trip Pasadena -> Winslow -> Albuquerque -> Denton -> Memphis
One thing: My car isn't in EV Trip Planner. I have an S 100D, and the closest is S90D. Good enough, really.