How would you play - a late live home MTT question

[vypremik]

Please let me know how you would play this AND why. There are several points pulling in different directions and I am wondering what players' opinions about the hand are.

This is from a home NLHE MTT. Started with 20 players, down to 8 at final table.

Background: First hour was re-buy and saw some action. This is about 3.5 hours into tourney and players have tightened up and a pre-flop raise will usually win the pot at this point.

There are 3 small stacks, 2 fairly big stacks, a huge stack, and me in fourth place. The tourney pays the top 3 spots.

I have played in a few hands at the final table, but have not gotten past the flop.

Player of most interest is in BB+5. Early in the tourney, immediately after my only re-buy, I took all of his chips, forcing him to re-buy. He played pretty aggresively during the re-buy period, but I'm pretty sure he has not yet played a hand at the final table.

Blinds are 5,000/10,000 - no ante

SB (80,000)
BB (60,000)
BB+1 Me (180,000) A [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/club.gif[/img]
BB+2 (80,000)
BB+3 (400,000)
BB+4 (1,200,000)
BB+5 (600,000)
Button (45,000) - nursing his last 2 beers, he has folded most hands

Action

I raise to 25,000 and it is folded to BB+5. He quietly raises it to 75,000. The button deliberates and mutters for a few minutes, then goes all-in.

I'm pretty sure he has a good hand. I ask him What do have, Queens? and he doesn't answer. Somebody says, No, he has Aces. I say, No, he doesn't have aces. Is it queens? He shakes his head slightly and says, Higher .

What do you do and why?