How tight is too tight?

[ianlippert]

I am currently playing 1/2 Limit, and am about to start playing 2/4 when I hit $1200. I've been scouting the 2/4 and see that this is where things start to get tough. From what I've been reading ppl seem to play with a VPIP of 20 or more. Of the last 7500 hands I've averaged 14.5 and am afraid It will be too tight for the higher levels. On the other hand I have also been averaging 5BB/hr and have come to play the tight game really well.

I know poker isnt a game of simplistic stats, but of outplaying your opponents. But at what point does a tight player get eaten by the blinds? What is the bare theoretical set of hands that could beat the blinds/rake?

Also to those winning players with 20+ VPIP what exactly are you playing? It seems like you would have to be playing suited connectors, suited aces, etc from all positions to get a vpip over 20. I have always found these to be big losers in limit.

What should I expect at the higher limits?