I didn't see the other part about the age thingy. Here is Fidelity with all sort of info, mostly useless:
https://www.fidelity.com/learning-center/personal-finance/retirement/lump-sum-or-monthly-pension
"If you don't roll the proceeds directly into an IRA or an employer-qualified plan like a 401(k) or a 403(b), the distribution will be taxed as ordinary income and may push you into a higher tax bracket. If you take the distribution before age 59½, you may also owe a 10% early withdrawal tax penalty."
So, basically you'd have to wait till the 59.5 age to get the pension lump sum without penalty from uncle Sam and higher tax bracket. Also keep an eye on the interest rate, the one feds sets. Double check with a guy that has some acronyms after his name, like a CFA, CPA...ETC
Also, I think there is a penalty if you DO NOT start withdrawing min. monthly amounts after the age of 72 from your pension, but I don't think that's your case.
https://www.irs.gov/retirement-plans/retirement-plans-faqs-regarding-required-minimum-distributions
There is one more thing about pensions being Direct Benefit and Direct Contribution and I don't know how this will affect you. You might want to give that an once over.