The low-hanging fruit here is your wife's shiny new 401k. Assuming it's low-cost and has good fund choices, dump as much money as you can into it through the end of the year (take whatever the max contribution is and use your salary for regular expenses).
IIRC you're eligible to deduct an IRA when you aren't offered a retirement plan at work, but I'm not sure if there's a phase-out, and it may also depend on MFJ/MFS.