You could flower now if you like, and might have a decent yield... But I should point out for you that the longer you wait to flower, the more time the plant has to build up energy stores, which in the long run produces a bigger harvest, more quality buds, and you incur less deficiency towards the end of flowering when the plant turns to its energy stores to finish the buds. In reference to your question about cloning, do NOT use fan leaves. Nothing will happen
besides hurting your current plant. Use only side branches from the lower part of the plant, as the lowest parts of the plant contain older hormones and have a higher success rate for rooting.
I hope this helps