That's an interesting tripod, TravelandNature, but you won't catch me on anything that potentially could launch me as a projectile at 60 mph. And, unless you're very macho, you'll not enjoy yourself in bad weather. So if you want to walk on the wild side, rent a convertible, or buy an older one, drive it for a month and sell it in Seattle (not exactly a city for convertibles, except on rare days).
Regarding on where to go and how to plan the trip, I'd make a point of going by my local AAA office (assuming you're a member) and talking to them. The folks there are great at giving you maps and charting out a route that will meet your interests. Without knowing more about you, it's hard to advice on on where to go. If I were doing this trip, I'd focus it around the National Parks, in my opinion among the best the USA has to offer tourists. I wouldn't drive to much in a single day, especially as you'll be on the road a month. Take your time. Maybe 4 hours of driving and 4 hours of exploring a day, before settling in and getting to know a few locals at a pub or coffee shop. Others would focus on seeing big cities.
Let us know hour plans work out, and good luck with the move!