I'd like some advice on a hand situation I faced last night:

It was in a 21 man live tournament £300 ($550) entry, just down to final table of last ten., with top 4 to be paid. Average stack 10,500, Blinds 300 - 600 on 45 min levels, so average stack had M of about 11.

I had just posted the big blind and had 7100 left in chips. It was folded around to the cut-off, who was one of the better players at the table, tight-aggressive who had approx 7500 in chips. He raised to 1800 which was the standard raise at the table. Button and SB folded. I looked down and had pocket Jacks..............what do you do?