Also, don't forget the Washington Parks route:
http://www.adventurecycling.org/rout...ngtonparks.cfm
....and, they have announced they are mapping out a route down the Pacific Crest, roughly paralleling the Pacific Crest hiking trail. Maps to be published later this year. An old, out-of-print book describes this route (I own the book; would love to do this trail:
http://www.amazon.com/Pacific-Crest-...5903406&sr=8-1
As you may know, over at CrazyGuyonaBike.com you can search for journals based on which Adventure Cycling Route the riders have chosen. Look at this page here - there are nearly 40 journals following the Great Parks ride; more than 200 who have done the Pacific Coast:
http://www.crazyguyonabike.com/doc/c...octype=journal
Personally I like the mountains more than coast; I'd do the Great Parks ride if I had the time. But the Pacific Coast route is generally regarded as easier (less climbing, more services), if you do it north to south (with the prevailing winds).