Both breads sound good to me. Are you going to sub something for the molasses? It is a tiny amount but if you can find something else that you like it's not a bad idea. I miss homemade bread. My DW has gone off wheat so no more bread. It's almost impossible to make good, whole grain gluten free bread.
There's no reason to drink vegetable juice unless you don't eat veggies. Drink water and eat your vegetables whole
I only use vegetable juice for gazpacho base.
ETA - sorry, no fruit juices on South Beach. They are too high GI.