Playing AK early in high stakes MTT

Interested in comments:
Pokerstars Sunday Million, quarterly $1000 buy-in. I regularly play 200 buy-in, but probablywouldn't play this without qualifying. Consider my skill level middle of pack for this field.
Blinds 25/50, 45 min into tourney.
Stack 3400 chips, started with 3000. At or slightly above ave stack.
Hero in SB.
Folded around to cut-off (villain). Villain has been quite aggressive so far but no signs of being a maniac. His stack is about 3700.
Villain raises to 150.
Button folds.
Hero raises to 550. Comments?
BB folds.
Villain pushes all-in.

OK, what to do?

fold. but if you call this will be a flip I feel, I'm not sure enough to call though.

what does he think of you

He doesn't have much info on me. If anything, he probably views me as solid, tight.

i think its a boarderline call this early probably flipping.

It's a deepstacked mtt. Why take flips for your whole stack when you can take better situations with the slower blind levels.

call if it's suited, fold if unsuited

^^ take that advice

Well, my reraise preflop was an amount intended to represent KK or AA.
When he reraised all-in I was 90% sure it was a coinflip.
My initial thoughts were pretty much as you stated, "it's early, wait for later".
Of course, I waited too long and eventually told myelf "You have to win coinflips along the way, so let's gamble."

He had JJ and it held up. While I think my decision was flawed, his push seems like a really poor decision.
Of course, that's no consolation.