...Jamaican Water Weed? Never heard of it, but last time I checked, "Water Weed" is just cannabis grown hydroponically. Other than that, your question has several factors to it that you left unnoted, but rather than ask you those questions, you should instead go to the Cultivation area of the boards and ask there. While you're at it, post the closet dimensions and your growing preferences/expectations/budget/etcetera.