In my view, whether you plan to stay in the house for only 2 years is irrelevant- you still owe the money, and when you sell, you have to pay it all back anyway.
So if the pay off is 150K, and you're paying about 850/month in interest, in 2 years that's about 20K you'd save. Even after losing the tax deduction, it's still 15K, so you'd get a 10% return over 2 years, 100% safe. Go for it, you can't miss!
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