Yellowstone / Grand Teton / Mount Rushmore - Number Of Days?

Thank you RatRaceRetirees, I was beginning to get bummed out.

We have a 5-wk starting June 1st trip panned from ? to Mt Rushmore and onto Oregon and back to ?.

I tried to fit Yellowstone and BigHorn, MT into it, but decided to drop those two in favor of heading south to I-80 instead of continuing on I-90.

I went to Yellowstone when I was 6, so figured it needed more time than we had from everything I've been reading. Will save it for when we hit Grand Tetons and Glacier and maybe go into Canada to Banff.