I think 12 is too high as well, but I also think 7 is just a little low. Depending on your sample size, I think 8-10 is a better range (this may be a little petty). The difference may come down to situational raises (i.e-a loose passive player limps in middle/late position and you only have 2 super TAGs behind you). Do you raise with KQo in the Hijack when no one has shown strength?

I am not assuming anything here, but I think that most important thing people (including myself) need to focus on is post flop play. I am constantly trying to develop the best lines preflop to get 1-2 big bets out of the other players post flop. In Low Limit Hold 'em this is really where the money is at because the fish are coming in with any 2 a lot of times no matter what the preflop action is.