I have ALOT of space for these little guys, alot more that i do freezer space

I know of a local petstore that breeds there own, so these will not be the normal petsmart mice, these will be the generations of this guys mice( which hopefull is better) I have alot of tubs too that are pretty tall, is there a need for a lid if they cannot hop out or climb out, to help with the airing out part? im sure there is.

I can go get pregnate mice if i need to, the guy i will get them from has his females with his males at all times to restock his pinkys and such so he doesnt have to buy from somewhere else. so there is a pretty good chance some of my females will already be "gravid" ( if i use that word again its because im a herp freak and do not like the mammal word Pregnate lol)

Some of his look like golf balls, so i could get some of those plus a male or two, and alot of females.