S33: Madras Oregon, located an hour’s flight time southeast of Portland on the drier side of the state, has a well appointed FBO. They are very GA friendly, the the airport is straightforward to operate into/out of.
Best of all, there is an air museum on the field with an airworthy WWII fleet, including a P51 among many other noteworthy warbirds. It would be a great warmup museum on your way to McMinnville, OR, to see the Spruce Goose at the Evergreen Aviation Museum!
Finally, the view of the cascade mountains doesn’t suck- Pictured is Mt Jefferson, the second highest peak in Oregon.