Binder and sleeves recommendations

Hii I want to re organize my pc collection and I was wondering wether going with an A5 or 44 binder.
I want 1 binder for NCT ten solo pcs, 1 binder for Taeyong solo and 1 for NCT JNJM cb, aditionally maybe I would like a nct2018, 2020, 2021 and 2023 binder. So if anyone have any recommendations on how to store it, feel free to comment!! ^^

Also I would like some binder recommendations, I know meowcafe, ultbias and mandudeco, but the rar extremely pricey... I was looking for something cheaper...

Also i wouls like some sleeve recommendations for pcs and other size inclusions as postcards. I would also apppreciate if you share how you sleeve your pcs, like single or double sleeved into the binder, etc
Thank you! Any recommendation if wrll appreciated ^^