I think you are talking 10max here again? Because there I do approximately what you just said. (ie, when I decide to go, I have to go strong enough or not go at all)

In 6max however you have to play a LOT more hands and raising a standard AA-raise of say 7-8BB on every hand including like KT is fatal.

(his example had 7 people so I figured it'd be closer to 6max than 10max and hence gave that sort of advice)