AKo on the button in first live tourney

Hey guys. I've been lurking for a while now and i really enjoy reading the advice in this forum. This is my first post - be nice [img]/images/graemlins/wink.gif[/img]

Playing at a local casino for the first time in a $20+2 freezeout. We are down to two tables left from five, and there are nine people sat at mine. Those who reach the final table get cash, with 9th getting his/her money back, first is about ~$600. Blinds are at T800 - T1600, and its a fast structure that keeps doubling every half an hour.

UTG+1 raises to T4800 and it folds to CO who thinks for a while then calls. I have roughly T20000 in front of me and am one of the chip leaders on the table. UTG+1 had a similar amount to me, and CO had about T16000 before this hand.

Reads: Both of the players are fairly sound players, they have played less hands than most of the table. I have a feeling that when CO was thinking he had a medium PP {JJ, 1010, 99} or AK, becasue he took a while to decide wether to call, or raise/go all in. From his body language i don't think he was going to fold. UTG+1's range is slightly larger, probably {AQ+ , 88+}.
Hero is percieved as tight agressive

Hero holds AKo on the button?

thoughts welcome, results to follow

Eggpie