Would you like to breed Isopods as display animals or as food animals?
There are also Isopod keepers who breed Isopods to feed the offspring to their tarantulas, scorpions, amphibians, turtles or reptiles. Hence the question, do you want to keep Isopods to feed them or do you want to keep Isopods to observe them and sell or trade the resulting offspring?
The requirements of the different species are relatively different, so the question for me is whether you already have experience of keeping terrarium animals or whether you are starting from scratch.