The mere mention of Krav Maga will get a quick thumbs down, but those people are either biased, or have no clue as to what they're talking about.
When it comes to real-world, street fighting self defense, all that moogoo gai pan, cream of sum yung guy, fancy kata/form crap is pretty much useless unless you've dedicated years to the style. It doesn't sound like you've got years to prepare.
You're not in need of a martial art. You are in need of a self defense system. Huge difference.
Krav Maga was designed to be effective in a relatively short amount of time. To recommend anything other than Krav Maga for the circumstances you've described would be blithering idiocy.
Having said that; make sure it's a facility that teaches real Krav Maga. Like ALL martial arts/fighting styles, there are the good and bad apples.
ADDED: For those of you with minimal reading comprehension skills, the questioner is not worried about the mean streets of Snohomish County. That's where they are currently living therefore would want to train there. They are talking about in the near future when they will be living in an area OTHER than Snohomish County.
Duh.