That's what I'd go with, absent any other information. You are filing jointly, right? Because if you're filing separately, that's a whole other ball of wax.
You get $5500 (2017) each that you can contribute to IRAs. You can split that money however you'd like between Roth and traditional IRAs. In your shoes, it looks like you cannot deduct a traditional IRA contribution (you should verify this for yourself, of course), so Roth is the obvious choice. Your wife, since she doesn't have a retirement plan at work, has a higher income limit for the deduction, so she probably can deduct her $5500. That'll save you 25% + any state income taxes.
The traditional Roth decision isn't too difficult - do you think your marginal tax rate will be lower when you convert or withdraw than it is today? Then go Traditional. Think it will be higher? Then Roth.
You could get on some tax software, or pull out a paper 1040, and play around with different allocations with all of your available info to see how this affects your income tax bill.