Depends whether or not you think the two callers would surrender. Stack size
late in a tourney plays a big role here. Especially a smaller one involved in this particular hand you mention. A short stack may be forced to raise the risk level at this point. All this player might need is to catch a piece of the flop, four to the flush, etc.,and push. Being on the button in this hand shows it true value. And of course different scenarios also will come into play. But once you calibrate all the options, you move should be based on what your confident your opponents will do. Being late in a tournament, you should have a good feel for your opponents, show some respect that they too are deep in a tournament, and respect the situation they are in.
bluffing at this stage could be very tricky, and costly. Having respect at the table would also help allot at this point.