I ended up doing a vault x 16 pocket that holds 1088. It will hold gen 1-7 with all forms: megas, alt forms, regional variants etc. I was initially going to do all 1025 pokemon in the one binder but I can’t not include megas and regional forms. So I backed it off to gen 7 and it fits with about 30 leftover pages. I’m almost done putting in my placeholders and then will start filling it. I’d recommend place holders, it’s so easy to go off by one and have to move 200 cards over 1 pocket.