How do you play this (AJs on the button)?

[TakeMeToTheRiver]

Playing a live $1/$2 NL game, $250 max buy-in. I have played very tight and seen very few hands in two hours. I have a little less than the max buy-in in front of me.

I am on the button and get dealt A [img]/images/graemlins/club.gif[/img] J [img]/images/graemlins/club.gif[/img]. Three limpers to me, I make it $12. SB and the three limpers call. (Pot approx $62, 5 players)

Flop comes 9 [img]/images/graemlins/club.gif[/img] 5 [img]/images/graemlins/diamond.gif[/img] 2 [img]/images/graemlins/club.gif[/img].

Checked to MP who bets $25, one fold, CO calls, I call.
SB raises to $100 and then it is folded around to me.

SB has me covered and is a tight player. The table has been relatively wild and we have both sat out most of the hands.

It is $75 to call with a pot of over $200 -- I have about $190 left in front of me.

What range of hands would you put him on? How would you respond?