Busskipper, thanks lots of good points. One of my bigger concerns as you pointed out is time. Right now I am not sure of an itinery, I am looking for ideas of things to see and do, than I will pick a small bunch of them to do that will fit in our time window. I wish we could hit all of these things but as you pointed out there is no way. It does sound like I will have to spend more time on the road per day and probably more time on Interstates to fit it in my time window.
As a side note, I will likely not go north of I80 as some day in the future we want to take a 2nd cross country trip that would hit the northern states and hit things like Yellowstone, Mount Rushmore etc, loop around at Vancouver and take the Trans Canada Highway the other direction and hit all of the Canadian landmarks.