Oh, and there may be some things you can do to reduce your AGI for IRA purposes, so you can make traditional contributions - don't know how far above the deductible IRA limit that you are but a few things you can do (I was recently looking at coming up with ~10K in more above the-line deductions here for this very reason):
1. Max traditional 401K / other plans that might be available
2. Max HSA (If eligible)
3. If self-employed, manage the timing of your expenses / revenue carefully to reduce business income (thanks to Cheddar for this one)
4. If you have taxable investments, tax-loss harvest if you can
So depending on your exact numbers, you might be able to get below the cut-off for that traditional IRA. Definitely worth at least checking, as if you're really looking at early retirement, that traditional IRA is extremely valuable - that article you link outlines how. And if you can't get that AGI down, the Roth IRA is not a bad choice either. This has more to do with future contributions, and not the rollover decision, as that money is already tax sheltered.