On our trip this past summer, we drove over 9500 miles and were out 96 days. Our route took us from Florida to Atlanta, Birmingham, Memphis, Oklahoma, Texas, NM, Az, Cal., Or., Wa., Idaho, Mon., Wy.,SD., Ia., Il.,Ky., Tn., Ga., and back to Fl. We always tried to stop at the Visitors center as we came into a state to get information on local points of interest. Most interesting sights will not be seen from the interstate. We spent 12 days on an Alaska cruise / tour, which was 3 nights on ship and 9 nights on trains, busses and airplane. This was on Holland America and originated in Seattle. The land portion that went from Skagway to Dawson City in the Yukon was by train and bus, from Dawson City to Fairbanks by air, and then bus and domed train to Anchorage where we then flew back to Seattle. This left the Alaska driving to be done by a skilled driver and allowed me to watch the scenery instead of the road. It also eliminated the fuel costs and rock damage to the RV. If you still want to experience camping in Alaska, you can rent an RV in Anchorage before you fly back to the lower 48. Since you have the time, don't worry about the miles you drive each day, look at the sights you plan to see along the way. Many small town museums are hidden gems just waiting to be explored. An example would be the drive along the Oregon trail or following the Lewis and Clark trail. Also take the time to attend any Ranger talk or walk that are available in the National Monuments. Last item, If you haven't yet done it, get a Golden Age pass at the national Parks. I think it is called something else now, but it gets you free entrance into all the National Parks and Monuments and 50% savings at Corps of Engineer CG.