If you are looking for rugged coastline, the area between Gold Beach and Brookings in Oregon is spectacular. You could spend all your time there. The Redwoods in Northern California are also visually compelling and would be on the way. Further inland, Crater Lake National Park is stunning and all of Southern Oregon offers incredible geology, rivers, forests, lakes. Get a good map and google interesting places as you plan your trip.
I hope you have a great time.