Maybe op can give an insight to what he thinks a standard overlimping range is at these tables.
The problem with limping behind is that you are often put in weired spots when one of them minbets and you are IP with A hi. You probably won't get too much value from worse pairs when you flop an ace (and Ax becomes even a smaller part of their range once you flop TP), utg could easily have AJ+ and you might valuetown yourself, etc.