Glad to hear that the Washington State DOL replied in such short time!

As far as insurance, like the DOL said, an agent based in Washington State (preferably the King County area), would be able to give you the best advice. There may be some sort of special provision that we average joes don't know about.

Your friends in Boston might not be able to add you to their insurance, but I'm not sure about that either. Insurance is really a tricky business, best left to the professionals.

-Brad