Live Tourny

[AP Indy125]

I was recently playing in a $300 buy in tourny maxed out at 200 participants. The tourny was down to the final 2 tables, i was the chipleader with approx. 3.5x more than the second large stack at my table. i was on the button blinds were 3000/6000 with a 250 antee. big blind was very tight non aggressive, two players limped, i'm holding AK, i had been playing a little lose but i only got aggressive with my raising when i had a hand and i'm pretty sure the table knew that. i raised it to 25000, one of the limpers pushed all in 32500 the other limper then folded. pot was at aprox. 63,500 it cost 7500 more for me to call, i did and his pocket 3's held. Did i make the right move considering my stack or should i have just called pre flop then pushed on an A or K flop?