I also personally choose to live close to work and don't commute from Seattle. However, a lot of people that do that have the notion that: Well, instead of commuting 5 times a week, I'll stay in the outskirts and then just drive into Seattle twice a week when I want to 'hang out'. So best of both worlds!
It's not. I know many many people who started off thinking this way, but you won't go in unless you have friends who actually live in Seattle. Driving & Parking is just too painful (if you commute the other way, at least you would have a known parking spot), and public transportation is not good enough to use as a substitute. You'll maybe try going in weekly for a few months, and then it will become a "once every few months" thing.
If your spouse has in mind that they want to go to a Jazz Club after work, or go try a new restaurant every week, or go see a play every week, you have to actually live in Seattle. Maybe when Eastrail opens up it might change things, but for now if you want to really experience Seattle, you have to live there.
It really depends on what you're into. If you have more of a skiing and hiking lifestyle, then living in the Eastern suburbs are actually much better.
You say you have a job offer in Kent and want a hangar. Have you looked into Crest Airpark?