Aussies on Road trip from San Francisco to NY and Nashville to LA

[dsm99]

Hello All,
We are starting a 10 week road trip in 11 days and have mapped out our route.
Our last trip was from Houston to NY via New Orleans, Atlanta, Nashville, Memphis, Louisville and DC. We loved the USA so much we are coming back for a bigger better trip.

We are travelling the following path:
Part 1- San Fran to NY with stops at
Mendocino California, Eureka California, Coos Bay Oregon, Portland Oregon, Seattle Washington, Leavenworth Washington, Spokane Washington, Butte Montana, Billings Montana, Rapid City South Dakota, Sioux Falls South Dakota, Minneapolis Minnesota, Milwaukee Wisconsin, Chicago Illinois, Cleveland Ohio, Buffalo New York, Albany New York, Boston Massachusetts, Providence Rhode Island, New York, New York.
Part 2- Nashville TN to LA with stops at
Atlanta Georgia, Charlotte North Carolina, Savannah Georgia, Jacksonville Florida, Daytona Beach Florida, Cape Canaveral Florida, Orlando Florida, Miami Florida, Key West Florida, Naples Florida, Clearwater Florida, Tallahassee Florida, Pensacola Florida, New Orleans Louisiana, Houston Texas, Dallas Texas, Oklahoma City, Oklahoma, Wichita Kansas, Colby Kansas, Denver Colorado, Rock Springs Wyoming, Salt Lake City Utah, Las Vegas Nevada, San Diego California, Los Angeles California.
I have identified a lot of things to see (mostly the general tourist places) but dont want to miss anything significant or interesting along the way.
We are both in our 50's, and interested in landmarks, historical places, and scenic places. We are not so much into walking, hiking, flowers or trees. The wife loves everything from "Gone with the wind" era such as plantation houses etc.
Any advice would be really appreciated, and if yu are on my route, feel free to message me and we might catch up for a beer.
Thanks all in advance.
David.