Or, you know, you could drive straight West until you hit Hwy 101 and take four days.
If you choose to go through Reno, I suggest I-80 to the Donner Pass. Last time I passed through there I diverted onto Hwy 20 and came onto I-5 at Williams. The reason for going that way would be to see the restroom at the summit.
https://www.google.com/search?q=donner+pass+restroom
The lobby is as big as a house, and the Men's and Women's wings have floor to ceiling glass block windows flooding them with light. It was amazing, excepting the paper towels littering the floor.
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Where in Tillamook? One of my favorite places on the Coast is Garibaldi, at the North end of Tillamook Bay.
When I was in college in summer I delivered dairy feed to the Lincoln City-Tillamook area. I always had to turn south 2 miles from Garibaldi. I always wanted to see it. Forty years later I read that they have two dive bars on Fark.com and road-tripped to have a look.
Some locals from Rockaway Beach told me that Garibaldi has a microclimate that is clear when everything else is fogged in. It's at the base of a massive bluff overlooking the Bay.
Also, for used building materials, there is a Habitat for Humanity store in White City.