Start an IRA for yourself. You can put $5500 in now, $5500 January 1st, and I'd reserve 25k in a high yield savings account earmarked for future contributions.
Next, I'd set aside 100k to subsidize living expenses while you max out your 401k or equivalent plan, if you have access to one.
Before you start talking to financial advisers, start looking for recs for a good CPA. You don't need to necessarily have them file your taxes, but I'm assuming you will soon have your first experience filing as Head of Household rather than Married Jointly. This is one of the categories hardest hit by AMT and you need to sort out how best to minimize this. A consultation with a professional will help you decide between Roth or Traditional IRA contributions, whether an FSA or HSA is worthwhile, whether you will qualify for property tax deductions and what level you can drop your charitable contributions to.
Do not buy a larger house until you determine whether you will still be able to deduct property taxes!
After you've taken these steps go to
http://www.bogleheads.org/forum/viewtopic.php?f=1&t=6212
and follow the directions for asking for advice there. You will get better help than 99% of financial advisers out there can give.