It depends on a lot of factors... We don't have the same climate but I'd say do not overwater unless your soil drains very very well.
With the smile you've got, you shouldn't have any problem with your husband letting you dig a nice little place for your nanners.
I just got 2 Truly tiny. At max 3 feet high, they make great container plants. I find them pretty cute too! See for yourself. Here's the link:
Truly tiny