Without additional information like family health data, your plan to delay drawing social security as long as possible seems very prudent. The pension is nice and keeps you out of the soup kitchen line, but your burn rate just seems really high to me. Do you live in a HCOL area? Is there any advantage to downsizing your home?
This is my personal bias, as every single one of my relatives (parents, aunts and uncles) who are in their mid-70's now starting taking SS as soon as they could . . . all regret it now. Every. Single. One. I don't even want to listen to their moaning about it. They were lazy and pulled the trigger at 62 when they absolutely should not have.
The only person it made sense to take early benefits was my Dad, who had three different types of cancer before he was 62. He had enough health problems that it seemed reasonable he might not make it to the higher pay off age. In fact, for years I have though he could die any day now. I think his love for his wife keeps him alive; there is no doubt he would be long dead without her. But, he is about to turn 75, and he is still having to work his "hobby job" because of:
1) not having his house paid off before he semi-retired, and
2) not waiting on his SS.
If he had waited, or made better decisions about home financing, then he could have fully retired three years ago. He warns me about it rather than complains. Oh well.
My Mom was especially foolish for taking it early, as all of her female relatives lived well into her 90's. But, like you, she didn't trust the govt not to pull the rug out from under her, and so she wanted to get money sooner rather than later. She is 77 now with zero health problems. Stupid, stupid decision. She is basically below the poverty line, maybe finally getting to frail to really work hard, and would be in much better shape if she had kept up working a little longer and delayed the SS activation so she could get bigger monthly checks. Thankfully she is so frugal that she won't starve, but it is a bare bones survival life of keeping the thermostat set lower than is comfortable for anyone. No money to travel anywhere. I could have told her at the time, but she would never listen to me. Her paranoia is just that ingrained. Don't let boogeyman myths about Social Security derail you the way it derailed her.
Good luck!