I think my plan of attack is to go with the temp on-leave scenario. Even if it's just for one quarter, that's still a lot of money I'll be saving. Afterwards, I'll be applying to literally every funding opportunity I can find.
There's no way for me to avoid taking out loans to cover tuition, but I've had a full-time job for a while, and I've been putting away half of every paycheck just for situations like this. It should be enough to cover living in Seattle for a year. Also, I have a pretty simple lifestyle, and I'm pretty good at squeezing the most I can out of every dollar.
My experience of moving to Seattle is going to be opposite of yours, I think. Coming from Buffalo, where the cost of living is pretty low, I feel like it's gonna be a major shock to my system.
Also, I'd just like to say that the English graduate office at Washington has been the best out of all the schools I've talked to in terms of communication. They're super quick with replying to my e-mails, very detailed, and most of all, actually talk to me when I call, rather than sending me to a voicemail or sending me to another department.