Quantity or quality? That's the choice you face.
We've done three trips in excess of 30 days; 6,300 miles, 4,400 miles and 8,300 miles. The last one was the most grueling - we spent not more than 2 nights in any one place and in fact the vast majority of CG stays was one night only. I can't complain too much - we saw an incredible amount of stuff, but it was like a "drive-by shooting" compared to the previous two trips.
Why did we do that? Well, we had five states left to fill in on our map and four of those were west of the Rockies (North Dakota was the 5th). We were willing to drive the way we did in order to realize that goal. You have specific goals, too but I'll caution you to balance the days of hard driving with a couple of days off the road to recuperate both physically & mentally. Good luck, enjoy & safe travels.
