Insert that holds all the cards sleeved for those that got it all including the plastic dividers.
Print the two pieces 162mm and 161mm if you can't print at the full size of 323mm.
Glue/tape the large card insert as once it is in the box, it will be filled with cards.
Like to be able to take trays out, play, put back, as easy as possible.
player boards and manual on top and it closes easily. If you wanted it to be stored vertically you could have to put something under the trays to raise them up so they were flush to the manual.