7 feet is great!! Put the light on an adjustable chain/hook, so that you may raise it (the light) as the plants get taller. Remember not to let the plants get to big before you switch to 12/12... when you switch to 12/12 they will double+ in size.... keep a fan blowing between your light and the plants.. this way you can keep the light real close.. : )

post pics when ya get a chance : )
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