Others will chime in with Campy specific options.
The most important aspect is whether you are making the change for the present or future. Many people chase lower gears with a few teeth here and there. I’ve done it. It is quite welcome at first and as years go on, another change is in the works.
A lot depends on how much time you spend in the 53t. If 39t is your primary ring in your new terrain, you have to determine if the 50t will be the primary ring. Riding a 34t in a 13/14/15 cog may not be a fun time. Likewise a 50-23/26/29 is also less than ideal. It does come down to how strong you are and what that trajectory looks like going forward.
After chasing gearing for a while, I just went to a triple and set it up so the inner ring was only used when needed. 95% of the time I’m in the middle and outer. But being the same age as you, and living in hilly terrain, I hope to get more years before needed e-assist.
John