There's a nice group of Airstreamers in the NW who get together regularly through the forum for rallys, and a nice group (of many of the same people) in the Oregon unit of the WBCCI who also have regular rallys and gatherings. Plus you have two good sized Airstream dealers within driving distance - lucky you!
How many people/pets will be camping? Do you like state park type camping, or do you want all the bells and whistles? Important questions to help you choose