First of all props to pushit for being as helpful as he is here, I haven't read this thread before until now. I figured I might as well throw in a little bit as well. For the flushing part of it.. sledgehammer is definitely worth it, depending on the type of nutrients you use. I'd say that with using FF or other organics that sledgehammer isn't as necessary. But if you're using miracle grow or other stuff like that, I think sledgehammer can be very beneficial for flushing, because of the extra salt build up.

As far as the lighting schedule.. pushit I saw you recommended 16/8, haven't heard much of using that sort of schedule, unless it was a typo for you and you meant 18/6. If its not a typo and you do use 16/8 I'd like to hear more about how that goes for you. I'd always be paranoid that with some strains that can spring into flower earlier than I'd like.