Getting to the final table.

[John_Manley]

Lately, I have been playing some online tournaments. I have had some success. I have made it to the money rounds several times this month but never to the final table. My demise, I believe has been that I have been playing to conservatively then eventually the blinds get me. For this reason, over the last week I have become considereably more aggressive before anyone has raised usually betting 3-4 x the BB. I have had great success early on. Infact, yesterday I was 3rd in chips after the first break. I then opened in late position with blinds of 100 with a 400 raise and was called by another player in middle position who I assumed limped in. On the flop this guy made a sizable bet and I folded. No biggy. Well two to three hands later I had Q-10 on the button with only one caller. Guy in the mini-blind was the chip leader for the table. I made a 400 chip raise and was called by the minblind and the guy in first position went all-in. All rags hit on the flop. Then on the turn a queen hit. I decided to go all-in and was called by the mini-blind. Actually another queen hit but it did not matter because he had the KQ and he beat me with his kicker.
My rational was that if the mini-blind had AK or or Ax then I did not want to give him the change to beat me. With his large bank roll he would have to have a nice hand to call (which he did) when I went all-in (5000). Was that too aggressive? What would have been the best play?