Sarracenia purpurea would do fine, since its the only Sarracenia adapted to the northern latitudes, found naturally into Canada.
All the other Sarrs and VFTs are iffy..
some people *have* successfully overwintered them in northern bogs..
larger bogs, in the ground, with heavy insulation..
so it can be done..but its still a gamble..
if its a particularly harsh and cold winter, they could all still die.
I intend to try it someyear soon..
I would build the bog, stock it mostly with species you know will do fine, then also plant just a few of the *iffy* species..see if they survive..if they do, try a few more the next year..
but I wouldnt go large-scale with VFTs or "southern" Sarrs, until you test it for a winter or two or three..
Scot