FT pretty much just started, 2nd in chips but not by much.

WPN, 3,500/7,000 blinds, 700 ante No Limit Hold'em Tournament, 9 Players

UTG+2: 215,131 (30.7 bb)
MP1: 222,987 (31.9 bb)
MP2: 185,765 (26.5 bb)
MP3: 172,638 (24.7 bb)
CO: 179,727 (25.7 bb)
Hero (BTN): 236,736 (33.8 bb)
SB: 602,701 (86.1 bb)
BB: 155,699 (22.2 bb)
UTG+1: 123,616 (17.7 bb)

Preflop: Hero is BTN with AKo
4 folds, MP3 raises to 17,000, CO folds, Hero raises to 35,266, 2 folds, MP3 raises to 171,938 and is all-in, Hero ???

Is this a snap call? ICMizer has me as a slight +%EV even against a tight range. Besides chip leader, everyone is hovering around the same stack sizes. Anything else I should consider when making this decision?