It also depends on the strain. If you have clones taken from a mature mother, you should be fine, as long as the strain is one that finishes before the first frost. If you are going from seed, and it is an early flowering strain, there might not be enough veg time before flowering starts to give a decent yield. I am not sure how flowering a plant before it is mature will effect potency, as I have never done it.
Another thing I just thought of, you probably have time for an autoflower harvest, but not a super auto.
Best of luck to you.