Dormancy lasts another 2-3 months for northern states, not for us here in FL. I'm in zone 9 as well, should only be a few more weeks for us, so rhizomes are perfectly fine to start now. You're also on the second floor, so frost damage to a rhizome is extremely unlikely, even if we get hit with another cold front before spring. Go for it, Sarracenia do great in this part of FL!
Thanks Taargus! Glad to see another north FL grower! I'm super pumped to make use of the plant-friendly climate here.