Decide for yourself how much filament you want left on the spools and which colors you like best.
There are six different full spools to choose from.
Note that the upper spool may have a maximum of 21mm, otherwise it will collide with the cards.

You have to print the “filament spools intermediate floor” a total of 6 times.

I would recommend a layer thickness of 0.2mm and a 4mm nozzle for the black parts.
The colored parts look more realistic with a layer thickness of over 0.2mm, because the layers then make it look like filament wound up on a spool.