Cover advice

So I’ve been creating a chonky set up for my April Cousin A5 and would like your advice:

In the set up: Hobo A5 Cousin spring start Stalogy 365 A5 notebook Folded paper wallet from Paper Republic. Smaller I know but great for collecting paper bits etc

It’s quite bulky but I like it and my current leather cover just doesn’t, well, cover it all.

Are there any covers that comfortably take up to 3 x A5 books that YOUVE come across? Or should I find some leather and make my own? Thanks 🙏🏼