if your really interested in a mostly indica northern lights I would not buy kc brains northern lights special, would probably buy nirvana northern lights or dutch passions oasis they are both reasonable priced.
besides possibly poor germination rates and most of kc brains seeds being hybrids that may throw several different phenotypes they are ok in my opinion and you could get some decent plants from there seeds but his northern lights special is supposedly a cross with a sensi nl and haze from what ive read and although its been a few years since ive tried his northern lights special it does seem to have alot more sativa in it than most versions of northern lights.