Should I be cbetting this flop? KK/AA are easily in my range, and I fired a turn barrel to try and fold out lower PPs

PokerStars No-Limit Hold'em, $0.10 BB (8 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

saw flop

CO ($20.55)
Button ($15.65)
SB ($1.90)
Hero (BB) ($11)
UTG ($9.50)
UTG+1 ($3.25)
MP1 ($12.95)
MP2 ($11.05)

Preflop: Hero is BB with K, A
5 folds, Button raises to $0.40, 1 fold, Hero raises to $1.20, Button calls $0.80

Flop: ($2.45) 4, 7, 8 (2 players)
Hero bets $1.40, Button calls $1.40

Turn: ($5.25) J (2 players)
Hero bets $3.50, Button raises to $13, Hero folds

Total pot: $12.25 | Rake: $0.60