More than anything, don't plan to much. You see something, stop and enjoy.
I agree, spending a week in the Black Hills would be well worth is. I am not sure that Mt Rushmore is worth the trouble, but going to Crasy Horse Mtn and the laser show at night was at the top of my list.
George & Karen Wharton
2004 Allegro 30DA W-20
2000 Jimmy toad