In mid- to late March 2013, I will probably be driving cross country from just outside of Washington DC to near Los Angeles with a friend and my dog. I have never driven this sort of distance before, and I'm not fond of driving (but I don't want to transport my older dog cross-country in the cargo hold of a plane), so I am looking to go the least-challenging route (fewest mountains, least risks of weather "surprises", etc.).
At this point, I'm thinking I-81 through VA, I-40 through Nashvillle and Memphis (we may do a short stop in one or the other, because of my friend's musical interests), and then either head south to Jackson OR go to Little Rock and then south to Shreveport to pick up I-20/I-10 the rest of the way.
Any sort of pitfalls to this route, other than boredom (which is OK!)?
Thanks so much!