I was afraid that May would be too early...
there are several optional loops I can add into the eastern part of the route.
(New York to Maine (WET!
) and/or Mississippi River Road).
I could also start at Big Bend NP in Texas and work my way up from there.
I lived in Wisconsin for twenty years and have frozen my buttocks off and been hailed on in July... so I know how random weather can be... add in any kind of elevation and it becomes even more so...
I could also, but not preferably, leave later, as I may have to be back for school by August 15th.
I have just started earnest research. Two books that are indispensible and have many on-line resources are:
The Official Guide to America's National Parks by Fodor's
Nat Geo Guide to Scenic Highways and Byways
Local knowledge, of course, trumps all of this... so keep the suggestions coming...