Aloha Boco, I would agree with you the Pacific Coast Highway is a must, to include cruising back to BC via US101. I've made that run several times. The last was with my wife from San Francisco to Vancouver and back. Also rode from Los Angeles up the coast back to San Francisco last year.
If you can fit it into your schedule, I would suggest that you consider a run to the Grand Canyon, Las Vegas, Tioga Pass into Yosemite (if it's open), then back to the Coast and on your way home.
In three weeks, we might run into each other heading in opposite directions since I will be heading to LA from SFO.