Ditto to what most of the above have already stated. In short, "less is more." And save your money. Thrift stores can carry great finds. Eddie Otto completed an Iron Butt on a scooter. Great idea, especially if you can keep the weight down. Starting from San Fran. makes sun glasses an absolute must. I would head north weather permitting, to avoid the sun. This would allow for a clockwise continental exploration. Once on the Atlantic Coast, you could then "Go West; start early." Recommended reading from 'How to Walk Across America," by Tyler Coulson. Route 50 is considered the loneliest road across America with lots to see and explore. Looking forward to reading of your adventure.