Did I play pocket Jacks well?

[sirtemple]

I was recently in a RL home tourny w/ about 30 players. Payouts to the top 4. We were at the final table, down to 6 with blinds about 10/20(lvl 8 or so). I was the chip leader in the SB. UTG raised 50 folded to the button who called. I have Pocket Jacks. The BB has almost as many chips as I have, and has not been aggressive behind me at all. Beacuse UTG is shart-stacked, and has been aggressive, I think UTG might raise w/ any Ace, and the button, having an average stack, has been somewhat conservative. I decided to raise to try and get heads-up or better yet take it down right there. I made it 500 to go, which was a raise of 1/4 of my stack. UTG had about 100 left I figured the button had about 750.

I though UTG was in a tough spot and would call, and the button would fold hoping to move up. Is this a good rationale? Could this have been played better? I had been using my big stack well all day, and pushing players around a little, does that affect this hand?

Jason

This is my first hand post, so if I could have described it better let me know.