One thing to consider, since you live economically, your ability to qualify for health insurance premium subsidies. If you go with a 72t, that might make you ineligible, and you'd be on the hook for premiums until age 65. If you have after tax savings to keep you afloat, then there's no hurry in getting an income stream from the assets associated with the pension. A rollover to a tIRA is not taxable and can be done now, and then you can take things as they come. The premium tax credit is worth a lot, so worth looking into.
The investment vehicles, once you get it in a rollover IRA, are personal to each. Say you call Vanguard or Fidelity and give them the defined benefit plan info. They'll get the funds, then you need to decide how those will be invested. Those who want hands-off approach often go with a target date fund. In your case possibly aligned with the year you will completely retire.