I made the AI call on this one figuring only AA would beat me, and with no PFR that was unlikely. Should I have backed away from stacking this?

Ultimate Bet No-Limit Hold'em, $.02 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG ($2.62)
UTG+1 ($2.62)
Hero ($2.52)
MP2 ($.36)
MP3 ($1.57)
CO ($2.21)
Button ($3.67)
SB ($4.59)
BB ($1.84)

Preflop: Hero is MP1 with K, K.
UTG+1 calls $0.02, Hero raises to $0.1, 1 fold, MP3 calls $0.10, B calls $0.10, 1 fold, SB calls $0.09, 2 folds.

Flop: ($0.44) 2, 2, 8 (5 players)
SB checks, Hero bets $0.2, MP3 raises to $0.94, SB folds, Hero calls $0.74.

Turn: ($2.32) 2 (4 players)
Hero bets $1.48 (All-In), MP3 calls $0.53 (All-In).

River: ($4.33) 3 (4 players, 2 all-in)

Final Pot: $4.33