I would charge to 90 and travel to 40 rather than the 60/10. There is almost no difference to battery wear and tear, and you have the extra battery reserve for the unexpected. Charging will take a little longer .. if that is a concern try 80/30.Going on my first > 1k mile trip in a week. Will have my entire family and luggage along. I am using ABRP and have each days trips mapped out. Charge to 60, travel to 10%, repeat.
So , what happens when I arrive an an out of the way charger and it is out of service. For some reason NAV doesn’t tell me it’s down. No range to get to another supercharger.
What is plan B?
I have plugshare. I have my mobile charger. I know around me the non-Tesla charging options are pretty crap. A few level 2s. Maybe 1 hotel in town with destination charging.