Print all bins, cores, and lid with the largest flat si...de down.
Print the optional label piece on its side
Do not print the pin files unless they are placed within the bin hinge (print-in-place)
Recommended
Print bins individually and attach by inserting a short piece of raw filament in each hinge. While it's possible to use the included pin files to make a print-in-place hinge, printing the bins individually will allow you to switch out bins in the future.
If the filament falls out of the hinge too easily, a small drop of hot glue in the hinge hole will seal it in.
Infill
Infill is only relevant for the start/end bins, the core, and the cap. The other parts are just thin walls and won't require infill as long as you print with 3 perimeters.