Warranty seems a little high as I just got one on my 2014 with less miles for 5year/90k additional for $2,200. I would see how much "wiggle" they have on those prices. I could not get a Toyota warranty so got a 3rd party from the Toyota dealer.
I would like to watch this as I would like to know how to do this as well. I am glad to help in any way but alas I am on the otherside of the country in the Seattle Area.
I also was thinking of creating a small camping teardrop trailer with a large battery pack to extend for long travel for...