Playing to tight deep in a tournament 18 players left 0.11$ turbo

Hi,

I'm not sure how to play when I'm deep in a tournament with 18 players left and I pick up A8s and a player limps before me, should I still use the push or fold chart under 15 BB or play different?
So what are your thought of this hand?

PokerStars - $0.10+$0.01|8000/16000 Ante 2000 NL - Holdem - 9 players
Hand converted by PokerTracker 4

UTG+1: 12.98 BB (VPIP: 37.04, PFR: 3.85, 3Bet Preflop: 0.00, Hands: 27)
Hero (MP): 9.27 BB
MP+1: 6.28 BB (VPIP: 16.67, PFR: 0.00, 3Bet Preflop: 0.00, Hands: 6)
MP+2: 13.44 BB (VPIP: 21.21, PFR: 6.45, 3Bet Preflop: 0.00, Hands: 33)
CO: 8.61 BB (VPIP: 22.22, PFR: 9.80, 3Bet Preflop: 25.00, Hands: 55)
BTN: 27.17 BB (VPIP: 57.58, PFR: 31.25, 3Bet Preflop: 16.67, Hands: 33)
SB: 15.36 BB (VPIP: 15.79, PFR: 5.88, 3Bet Preflop: 0.00, Hands: 57)
BB: 21.24 BB (VPIP: 31.48, PFR: 16.98, 3Bet Preflop: 10.00, Hands: 55)
UTG: 9.11 BB (VPIP: 7.14, PFR: 7.14, 3Bet Preflop: 0.00, Hands: 14)

9 players post ante of 0.13 BB, SB posts SB 0.5 BB, BB posts BB 1 BB

Pre Flop: (pot: 2.63 BB) Hero has A♥ 8♥

fold, UTG+1 calls 1 BB, fold, fold, fold, fold, fold, fold, BB checks

Flop: (3.63 BB, 2 players) A♣ J♦ 8♦
BB checks, UTG+1 checks

Turn: (3.63 BB, 2 players) 9♦
BB checks, UTG+1 checks

River: (3.63 BB, 2 players) K♣
BB checks, UTG+1 checks