Fold AK Pre-Flop?

[SittinOnDubsWGW]

Been lurking for a while, decided to finally post, so here goes.

In a live tourney with about 90-100 people left in it, blinds are 60/120. Avg stack is around 2500. I'm sitting with around 4900 I am UTG.

READS (chip count) relevent to the hand:
SB(4200)- very tight player has only lost one showdown out of about 5 since he's been at my table, and had second nuts on that hand.
UTG+1(2900)- okay player, seems to be weak-tight
CO(1800)- solid player overall, doesn't try to do anything fancy. Normally only calls raises with pairs or suited high cards. Might be tilting due to two pretty big beats over last three hands.

I am UTG with AsKd I bet out to 500
UTG+ calls 500
CO raises all in to 1800
SB re-raises all in to 4200

UTG???

Discuss.