You won't harvest early, but you will harvest big. The extra months, assuming the plant thrives and an early frost doesn't stunt it's growth, will add genetic age which will produce bigger buds (hooray). But there are dangers in planting early, the not just an early frost. Daylight times are big, not enough daylight in early growth could stunt it. There are other variables, benefical active etymological microcosms may take a little while longer than the season allows. A bugs ideal environment is different than a plants, even good bugs. But really, that's not a big deal and as long as it's warm, you get lots of light in the southern US, you're good to grow.

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Operation: Marijuana for the Masses. Here's your assignment Soldier of Fortune; you will germinate any and all schwag seeds which are viable for plantation. You will then randomly plant all germinated seeds before development into seedling throughout your home town in public places which hold a viable environment for growing. You will leave and never look back. Briefing over.