Sativa is gonna take a few more weeks to finish flowering,versus growing a fast finisher and very potent indica or aff.Sativa that I have grown is Jack Herer.It took around 11 or 12 weeks to finish,and stretched to the point of having to bend the main stalk.That was some BAD ASS SMOKE! I have the bugs worked out of a sativa grow! I would do a scrog. That would keep an even canopy and increase bud sites,thus increasing the overall yeild.The potency part will be up to you.By that I mean you have got to let it get to that stage before you harvest and drying and curing would be another issue all together.

Ga Grown!