I love your bag collection! Beautiful items!!! You and I are both fans of Chanel,
Prada and Miu Miu. 😍
I agree with the earlier comments. Anything you haven't worn in a year or two that isn't 1) a forever bag or 2) something you will definitely use as your kids are older should be sold immediately. You can put that money & storage space to better use.
Aside from that, you are heavy on black bags. So I would pick the one or two that I don't use much and sell those. It's hard picking for someone else but I would probably sell one or both of the Miu Miu pouches and / or the Miu Miu bow bag. I'd definitely keep the Chanels as they can be worn dressy or casual and will only cost you more to rebut later (at potentially lower quality). The balenciaga is a good unstructured option in collection - keep. I have a similar bag to your Miu Miu shopping tote in a different color and adore it. It's a lady bag with attitude - keep. I'd keep the red for color. Small pinky beige Prada is a gray summer / non black option - keep. And the (I think) Mark Jacobs tan one in the lower left should be a keeper. I don't own this bag but hear good things about it. You need lighter bags and it's a cutie - keep. The tan bag upper left I think can go. Definitely your SLG's should stay.
I think you have a great collection without a lot of fluff so I vote for keeping the vast majority with a few options I noted above to sell if you just feel you must downsize.
Enjoy your process! 😊👍