I'm ten years ahead of you ... my plan is to continue working for around two more years, then ER but live off our own savings, part-time income etc. for as long as possible. If we need to, I can take the pension at 55. If we don't need it, I can keep deferring it and get larger monthly payments for life when I eventually do take it.
We can withdraw our stash at much higher than the usual 4%, as it only has to last a few years.
Since you have ten years, you have time to build up some money to live on, then quit but defer taking the pension to a more normal retirement age with less reduction. Of course you won't have as many years contribution into the pension, so you have to adjust the numbers your pension statements tell you. They always assume that you work until the moment you take the pension.
Remember too that you can take a little more risk in your own investments, because the pension is very low-risk. With a relatively short time horizon I would not go all stocks, but you can certainly have a higher ratio than normally recommended when 5-10 years away from using the money.