Good Lord, a 5' plant is already going to produce some pretty monster buds without much extra help! But, because you're so far in to your flowering cycle, I wouldn't recommend adding any new bloom fertilizers to the schedule. Especially because you're using decent sized pots, and won't need to water as frequently.

Though, after another week or two, when you stop using fertilizers and begin the final flushing periods, you can keep using molasses. I know it sounds weird, but I actually like to add a carbonated beverage to the water in my last few weeks. In my opinion, it adds a sweeter taste to the dried product, and doesn't seem to make any noticeable decrease in the size of the final yield.