PM your mailing address to me and I'll mail a US atlas to you with the ebtter riding areas highlighted.
I do 2-3 cross USA trips each summer and know loads of good places to stay and most of the better roads. Of course, you're welcome to tag along for a bit of one of the trips if the timing works out.
There are three main areas that you should include in your trip if you can;
1) Southeastern - Tennessee, Nort Carolina, Georgia and Kentucky. This area has some of the best riding in the US, without question.
2) Mountain - Colorado, Wyoming, Montana, New Mexico, Utah
3) West - Northern California, Idaho
I'd be happy to include soem CD's full oc pictures of each area if you're interested.
Crossing the midwest kinda sucks - very flat, extreme weather with widely varying temps and about 1,200 miles of nothing to cross. But if it has to be done, crossing through the north is probably the best. Parts of Michigan, Wisconsin and Minnesota are actually quite nice. And you'd end up in the Sturgis / Badlands area on the western edge. It's got some okay riding as well.
Riding in Nebraska, Iowa, Kansas, Illinois, Oklahoma and most of Texas should be avoided if at all possible.. Nothing to see unless you really like 45 mile long cornfields, wheatfields and lots of cows and pigs.
Like Bilco said, rental fees will kill ya - better off buying a bike here andselling it when you're done or shipping your own. Rentals go for $150 to $200 per day. And they can be hard to find unless you want to ride a HD (not recommended). Lots of bike hire places in Cali and some in the east. Some in Denver as well.
If I can help you out with routes, places to stay, etc - please don't hesitate to ask. Email is
EaracheMS@Gmail.com
Eric