Important of tournament stack variance?

[stussy2k]

I've been experimenting with levels of agressiveness in multitable tournaments, and i find that being hyper-agressive is the best way to play it. It allows me to build up a stack and gives me a table image one someone not to be messed with. But, the problem is that with this agressive play, my tournament stack varies alot more than if i were to say, play only the top 10. Do any of you think that stack variance is a problem, or is just getting ITM the important thing?