Yep - there is plenty of redundancy all the way until Yorkshire! With Leaf range you should have little problem from Woodall (or Wetherby) to Scotch Corner (or Aston Hotel)!Ditto. I have southampton-newcastle planned....
If you've not done it before, you will be surprised how straightforward it is!
My advise is not to push for the 'minimum-stop strategy' - I don't think that running the car in outside the 20-90 band has any dividend. Charging takes longer at the extremes and its probably quicker overall to plan in a couple of extra stops!