GF Chocolate Chip Banana Bread

My mother makes the best banana bread, and I really loved it growing up. So it has been very frustrating for me to try a lot of bad gluten free banana bread recipes. I finally decided to try and work from my mom's recipe to make a better banana bread. Then I found some great recipes on the web for chocolate, and chocolate chip banana breads. I can't remember exactly what recipes I used to mix together to make mine, but this is what I used today. It's not perfect, and I think I want to play around with adding a mix, but it was pretty good.

1/2 cup margarine, cut in little pieces
1/2 cup white sugar
1/2 cup brown sugar
2 eggs
3 bananas, mashed
1 cup Featherlight
1/2 cup GF mix
1/2 tsp xanthan gum
1 tsp baking soda
1/4 tsp baking powder
1/2 cup sour cream
1/2 cup mini semisweet chocolate chips

Preheat oven to 350. Spray a 9x5 loaf pan with cooking spray. Cream together margarine, sugar, and eggs. Stir in bananas and vanilla. Add xanthan gum, baking powder, baking soda and flours; mix well. Blend in sour cream and chocolate chips. Pour batter into prepared pan. Bake in preheated oven for about an hour, checking for doneness at about 50 minutes.