A predicted range of 290 miles ?.
Have you, or did you reset both of your trips prior to this new longer journey?.
Are you going to take on this unknown covered trip, trip based on the face value of this 290 miles of range Michael ?.
If you DO decide to take on the whole around trip without charging, on your return home observe your remaining SOC, then before powering down, reset your accumulative trip and see what effect it has on the remaining range on the GOM.
It will be very interesting to hear what actual miles you cover vs the predicted 290 miles of range shown on the GOM.
Efficiency and weather conditions for the trip will be extremely informative !.
Drive carefully and have a safe trip, please report back on your findings !.
Thanks ?.