Thanks for the info! I would ultimately go with Option C, however, there is another upfront cost added to the car. I may have to start with just using the standard meter and paying .31. My estimate to fill up a 300 mile battery would be about $28. Much higher than I thought.
Well, in the interim, try option (b). Then just set your car's computer to charge not when you plug it in when you get home, but when the rates go down at night. That's what I do--always charge at the lowest rate unless there is a special reason to charge at a high rate.