I live in Ohio and I got a new Russian as well. As far as I can tell they'll be slightly tolerable to our weather, but during like dec-feb it'll be way to cold and wet so we'll have to bring them in

Minimum space outside I'd say about 4x4 or as I have for mine 4x6

Indoor I'll be using a 50gal aquarium with deep woodchip base and two heat lamps and a pad. With a rock house and a stainless steel dogpan for water and soaking.

I won't be hibernating her until I'm sure she's healthy and that'll take a few vet visits. But when that happens, I'd read russiantortoie.org on thier hibernating ideas