If you think you have an advantage over the field of players, then you should be in your seat from the start of the tournament, so you can beat up on those weaker players and take all their chips. 😀
But if you feel the opposite, if you think the field of players has more skill than you do, but you still want to take a shot in a higher-level tournament, or maybe you won a seat into a bigger tournament via a satellite... in this case, it might be a wise choice to skip the early levels and enter later when the stacks are shorter and luck becomes a bigger factor than skill... just gamble it up and try to accumulate chips in big bunches that way.
Basically, know your own level, and then adjust based on the level of the tournament you're playing... that's my take on it. For myself, I generally dont play a tournament unless I feel I have at least an equal skill level to the average player in the field, which means I'm usually in my seat from the very first hand, but that's my game and my own philosophy, yours may be completely different from mine. Some love to play the late-reg game and "snipe" their way into a quick cash, those are players who know their Nash Equilibrium push-fold charts perfectly.