The kind of spiders is based on the species you most commonly find in your living space now. Each spider will have its own personality but, will largely behave a normal spiders in a environment they feel safe, with that said if for example you let it get to cold there will do something about it.
Can I decide where they live?
yes
In that case, 1 million spiders, but they’d all stay inside a box in my crawlspace.
Alright, then I’ll take 20-30 for my small apartment.