Uhh... I don't think I would put tires worn so unevenly on an AWD Subaru anyway. Mmmmmaybe I'd put one more-worn and one less-worn tire on the front and do the same on the rear, so the center differential would be happier, but that would be only for a short time because stability in turns would suffer.
Also, consider the fact that you're at the legal limit of tread depth. Regardless of whether or not you can maintain safe control, you are open to a ticket by any police officer who may want to cite you. Moreover, if you are in a collision of any kind you may find that insurance companies would be unwilling to pay for damage that they felt was caused by your car not having legal tires.
And of course, you never know when you might find yourself in a downpour surrounded by people who can't drive, requiring you to push your control over your car to its limits.
Sooo... yeah, you can guess which one I voted for

. You're talking a good $400 in expendables just to get your car that distance; I say spend the little extra (it shouldn't cost an entire hundred) to make the trip safer.
"Just reading vrg3's convoluted, information-packed posts made me feel better all over again." -- subyluvr2212