As a married couple, both need to be 1st time buyers (or have not owned a home in the preceding 3 years) to get the tax credit. I imagine it may depend on how the tax return(s) are filed, as well.
We must advise that you seek an accounting and finance professional to answer these questions, as this is a tax law question much moreso than a real estate question. I will keep an eye on your responses and hope that a CPA chimes-in with an answer. Good question.
I hope that helps, and congratulations to you on both fronts!
Derek Bauer, Associate Broker / Realtor
Real Estate One