I just got a Sterilite 41-qt tub; plan on building my rack around that size. But is this tub large enough for breeding purposes? I have a larger Sterilite under-bed-storage one; I am thinking of making one rack shelf deeper and using this bigger one for my female.. keeping the 41-qt sized ones for my males.. any advice? I know this is kind of about caging, but the thing is i want them to have enough room to breed.