Cousins and 5 year A5 cover

I've decided to start the cousins and 5 year journal for next year. I need a cover that can hold both journals with extra room for bulk from photos, stickers etc.

I had my eye on Paper Republic's "Le Trifold," which looks like it'd work out decently enough. But it's currently out of stock.

Does anyone have recommendations for alternative, that are either cheaper or just more functional?

I'm not set on a trifold style specifically (wouldn't mind a zip cover), so I'm open to any recommendations. Thanks in advance!