AK vs. a reraise

[SonnyJay]

I just began playing SNGs again after about 7 months away, and I'm trying to get the feel of the game again.

I found myself in this position three times in the last two nights, and I wasn't sure exactly what my plan should be. 3rd hand of the tourney, no reliable reads yet. I appreciate your advice.

Party Poker $20+$2
Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed) http://216.119.70.224/converter/hhconverter.pl

MP2 (t800)
Hero (t800)
CO (t785)
Button (t760)
SB (t720)
BB (t655)
UTG (t785)
UTG+1 (t800)
UTG+2 (t1095)
MP1 (t800)

Preflop: Hero is MP3 with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t15, <font color="#666666">2 folds</font>, MP2 calls t15, <font color="#CC3333">Hero raises to t85</font>, <font color="#666666">1 fold</font>, Button calls t85, <font color="#CC3333">SB raises to t365</font>, <font color="#666666">1 fold</font>, UTG+1 folds, MP2 folds, Hero ???

a) Any problems with my original raise?
b) What's my plan after SB raises? Can I play my AK vs. a random player's reraise from the SB? Even if I can, would I be better off keeping my chips and hopefully be able to take advantage of better situations and the bubble later?
c) How much is part (b) affected by the button's smooth call of my raise? How does it change things if he isn't in the pot?

Thanks in advance for the help.

-SonnyJay