Been doing 200 miles from Suffolk to York over the past couple of years with no issues. Easily without a stop but I do stop at a Tesla SC en-route.
Yes, the public network can be a PITA but it has massively improved in the last couple of years with contactless rolling out on most of the new ones.
Use Zap-Map to plan and you can filter to show the quicker ones, 50’s should be enough whist using the gents and grabbing a cuppa.
You will be fine.
Pitch