Stick with the store bought molasses. What ever they are selling at the shop will not add much that you don't already get from the blackstrap.

As for fan leaves, there are different opinions. I would leave them alone. If they are blocking bud sites then you can think about it. At this point those leaves are producing energy for the plant. They may have taken a bit of energy away from the plant while they were growing but once grown they produce for the plant. Also, no need to stress them unnecessarily. My two cents.

Looking damn nice for bag seed!