@Photorat I would encourage an e-bike. The pedal assist is a godsend with all these hills, and getting up to speed, or if you have to take the lane.
I second another comment I saw suggesting a mirror on your handlebars.
Reach out to your city councilers - both John Duggar and Kevin Teater are cyclists, I met them at a Ride Westside event, and they want to make Beaverton better for bikes. They might be able to suggest some resources, too.