Off line tounament tip needed

[sunek]

Hi

I am participating in an off line free tournament (Empire poker tour III) with 500 participants. I play a lot of SnG’s and are doing pretty well. Basically my strategy is to play very tight and aggressive and steal blinds and small pots from when my good starting hand misses the flop.
Would this strategy apply to a large tournament as well?

Thank you

sunek