I was in Minneapolis at their big conservatory and they had bananas with fruit...i've also seen fruit on bananas in Madison, WI inside Olbrich Conservatory.
The issue is how warm are you going to heat it and how much can you afford!
Light shouldn't be a big issue, because the plants will slow down in winter... I think the key would get them to flower early in the spring.
I'd go with dwarf bananas like others have said. The full size bananas are just too tall.