Standard?
Or is it better to push over the PF raise and save a line like this for AA?

No Limit Holdem Ring game
Blinds: $0.15/$0.25
10 players
Converter

Stack sizes:
UTG: $24.75
UTG+1: $11.60
UTG+2: $10.10
MP1: $10.75
MP2: $24.60
MP3: $4.75
CO: $6.25
Button: $24.70
Hero: $21
BB: $27.10

Pre-flop: (10 players) Hero is SB with K K
UTG calls, UTG+1 raises all-in $11.6, 6 folds, Hero calls, BB folds, UTG calls.

Flop: 6 J 4 ($35.05, 2 players + 1 all-in - Main pot: $35.05)
Hero is all-in $9.4, UTG calls.

Turn: 4 ($53.85, 1 player + 2 all-in - Main pot: $35.05, Sidepot 1: $18.8)


River: A ($53.85, 1 player + 2 all-in - Main pot: $35.05, Sidepot 1: $18.8)


Results:
Final pot: $53.85