Then, considering the fact that you're limited to the 30A anyway, and assuming you already have a mobile charger, your #2 option probably makes the most sense and you might even come ahead money-wise. For the two 14-50 outlets I had installed in our garage addition, I bought a couple ~$30 brackets off Amazon that mount on the wall and hold the mobile chargers and plug end securely and provides a place to wrap the cord. If I plan on travel, I can just slide one of them out of the bracket and take it with me.