thanks, your comments are helpful. (assuming I got all the acronyms correct )

IYO, is this a do-able itin?

arrival - half day left - downtown SEA - Pike Market, etc
(drive part way up to)

full day: Olympic National Park, stay at Crescent Lodge

full day: early AM, Coho ferry to Victoria, stay at Marriott FS

full day: Victoria, stay at Marriott FS

full day: head back down towards Seattle (options are)
Bellingham/Fair Haven OR
Mt Hood Park OR
Snoqaualmish Falls (know spelling is wrong, sorry)
spend nite at Sea-Tac for early AM flight

We will be there in late September if that makes a difference to your reply....

TIA for your help. We are early risers and like to drive, so want to see as much as I can - but not be so ambitious we end up not enjoying anything!