Here's what I ended up choosing based on some of the suggestions here. Once they arrive I'll update on how they worked out.

For the deck I plan to play with: https://www.amazon.com/gp/product/B06XX2BFPL/ref=od_aui_detailpages00?ie=UTF8&psc=1

For the character cards I'm gonna do a 3-ring binder with these pages: https://www.amazon.com/gp/product/B004QVH0RK/ref=od_aui_detailpages00?ie=UTF8&psc=1

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I'm gonna use these pages in that same 3-ring binder for the cards that aren't currently in my deck rotation: https://www.amazon.com/gp/product/B0711M322D/ref=od_aui_detailpages00?ie=UTF8&psc=1

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