Re: Hi, I'm planning a huge adventure, please help!
Honesty to god, buy a Greyhound bus ticket and buy a bike in Cali. Otherwise you need to take a spare motor and enough parts to rebuild one on the road and the tools needed to do it. Or you could end up in Bumfook Arkansas with some redneck-looking guys playing guitars and banjos saying, "squeal like a pig!" while you wait for a parts delevery.
As big a problem mechanical can be you really need to investigate all the motorized bicycle laws for the states you are going to be traveling through. Some laws are pretty lax the there are states where MB's are out-right banned. There are laws about the amount of power you need to ride Interstate roads but there's also provisions for riding highways if there is no other practical way to get somewhere.