My plan would be to get out there as quickly as possible then take about a week to wander around the area and then get back home as quickly as possible.
Usually, I can get out to the Page Arizona area from Maine in 4 1/2 days. As that is about 2900 miles and the Palouse is about 3,000, I'm good...barring any snow storms on the northern route.
Eons ago, I lived in Eugene, Or, for about 6 months but never got to exploring other than Mt. Saint Helens.
So, i guess around the end of May would work...before I get busy in the store for the summer.
Thanks for the info, guys.
Peter, any info about the area would be helpful. You can PM me if you want.