Button who shoves over my flop bet is a 44/9 drooler, I would normally be fistpumping snapcalling against his shove. MP2 though is 24/14 with 60% fold to cbet over a small sample. I was confused here and have questions on how I should size my original flop bet and should I be shoving over here? Folding?

Full Tilt No-Limit Hold'em, $1.00 BB (9 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

SB ($40.90)
BB ($100)
UTG ($352.45)
UTG+1 ($97.55)
MP1 ($49.50)
MP2 ($76.50)
MP3 ($176.80)
Hero (CO) ($108)
Button ($40.80)

Preflop: Hero is CO with A, K
UTG calls $1, 2 folds, MP2 calls $1, 1 fold, Hero bets $6, Button calls $6, 2 folds, UTG calls $5, MP2 calls $5

Flop: ($25.50) K, 9, 8 (4 players)
UTG checks, MP2 checks, Hero bets $13.50, Button raises to $34.80 (All-In), 1 fold, MP2 calls $34.80, Hero ?????