cubensis

Hey y'all I'm growing some B+ Cubensis in a 6 qt Sterilite shoe box modeled after Willy Myco's Youtube video on mini monotubs. they were mixed 4 days ago on Monday. Anyways I filled the substrate above the FAE holes. Should I drill FAE holes in the top container that goes on top of the bottom...

anyone have experience using 4oz open mouth canning jars as opposed to the ussual 8 for the PF-Tek. any advantages/disadvantages besides yield obv? also what would be the best way to use cakes to get another substrate ready if I have to use the smaller size?