What's the weather like in that part of the country, that part of the year? You're going to be heading into winter - long cold nights, short days. Make sure you think that through, and have funds to make it home some other way and spend some nights in indoor accommodations if you run into really seriously bad weather.

Or consider just hanging a West when you get to the south, and staying where it's warmer?

You can possibly find used copies of the A.C. maps by posting here, A.C. or www.crazyguyonabike.cm

Have fun!