Hi Evan and welcome to the PNW! I know that airplane well; I helped buck rivets with Mike and Mike helped buck on my Rocket.
I think your best bet would be Paine Field. Your options are really Arlington or Paine. Long waits on both but as normal once you "get into the community" something can usually be worked out. If you like fly over to Paine sometime and I can introduce you around. Mike knows me well and can get you in touch.
If you like a closer commute, (without gravel) Crest Airpark, Auburn, Puyallup and Tacoma Narrows are your primary choices. I know of availability at Crest, and Auburn probably has an open hangar available.
Shoot me a PM with your phone number and I'll be happy to talk.
Welcome to the PNW
PM sent just now...