New to the sight and lots of questions! We live in Ky and plan a road trip to SD in late May or June...we only have about 12 days to do this...really want to know what is the best way to do this....we will be on a trike so stops are important...but we want only sights (on the way) that take a couple of hours then on the road again! How much time should i allow for Mt. Rushmore? We would also like to see a couple of other places while there...very interested in scenic riding areas...have planned our route but looking for suggestions...love historic towns and history in general....any suggestions welcomed!