Binski,
I bake and freeze mini-loaves of quick breads every year. The longest that I have frozen them is 5 weeks. I put them on a cookis sheet inside the freezer for about 15-20 minutes, then I wrap them in plastic wrap, and put them in an airtight container (I ususally use those tins you get cookies or fruitcake in). They taste like they have just been baked, when thawed. I wasn't afraid of them going bad if I froze them longer than 5 weeks, but I was afraid they wouldn't taste as fresh.
After giving it more thought, I went to www.baking911.com and did a search for you about how long you can freeze quick breads and other baked goods. This is what it says:
Quick breads, Coffeecake, muffins fruit, nut breads, pancakes, waffles, etc: Prepare and bake as usual. Completely cool and wrap in plastic wrap and then in foil. Store at room temperature or place the bread in an airtight container and freeze. Note: Low-fat muffins and biscuits are of maximum quality right out of the oven. Quality decreases when they are frozen. Do not freeze the batter as the chemical leaveners will lose their "punch". Suggested freezer storage time: 2 - 3 months.
Thaw quick-bread at room temperature in original wrapping. Slice fruit and nut breads while partially frozen to prevent crumbling. Foil-wrapped quick-breads may be reheated in foil in a 325 to 350 F oven for 15 to 20 minutes or until hot.
So, you should be safe if freezing them for 3 months (I wouldn't freeze them any longer though.). Just time your baking where you can start baking the Banana Bread (Make sure that your bananas are real ripe) to do some of the baking one weekend and put them up. And another weekend you can bake more. Anyway, I hope this is helpful. AtlantaPat 