G It seems that a life insurance policy would be smarter as I could save a couple of hundred dollars a month as well as if I die my wife's benefit would be tax free. I was thinking of getting 1.5 mil. for first 10 years, 1mil for years 10-20, and 500k years 20-30. Our age at retirement will be me 53 wife 55.
If your pension is to be a relatively fixed part of your monthly income stream throughout your retirement (that's my assumption), then why the decreasing amount of life insurance to replace that income stream in years 20-30 if you die before your wife?
Also, consider the inflation impact 30 years out. If we have 3% average inflation, that 500K check from the insurance company in 25 years will buy as much as $250K in today's dollars. At a 4% annual wtihdrawal rate for your DW, that's $833 per month: how does that compare with the total pension she'd get?
Then there's the question of what happens after 30 years--if you replace the pension with insurance, she'd get nothing, right? What income stream will cover her at that point?
Is there another type of insurance product that pays >only< if you pre-decease her? Yes, you are likely to go first, but in a considerable number of cases the woman dies first (and she is two years older than you are), in that case all your premiums will have been paid for something you don't need. It might be 20% or so cheaper to buy this type of product, if it is available at all--no sense in buying more insurance than you need.
The issue probably boils down to a look at all the income sources you two have and when will the various income streams come online (e.g. will she be getting a lot of SS? Does she have a pension of her own? How much savings have you got and what portion of your total living expenses will you be able to cover with reasonable withdrawals? etc). You'll probably want to noodle that stuff out on a spreadsheet, and FIRECalc can help.
The idea of replacing some of your pension with life insurance might have merit, but I'm not sure there's enough info in your post to know if you'd likely come out ahead.
When I retired from the USAF, we chose to buy the "survivor's benefit plan" (SBP) to assure DW continued to get part of my pension if I checked out first. Like you, we looked at other options and in our case going with the SBP seemed to be the best one for our particular case, but that program is different from what you've got available.
Sorry for all the questions, they are just intended to give you points to consider. Welcome to the board!