No great reads, I thinks hes somewhat stationy but not sure.

I usually 3 bet a little more.

Standard? Should I check turn here for pot control? Bet sizing ok?

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LeggoPoker.com - Hand History Converter

Hero (BB): $50.75
UTG: $55.85
MP: $68.05
CO: $53.05
BTN: $51.45
SB: $67.90

Pre-Flop: K A dealt to Hero (BB)
2 folds, CO raises to $1.50, 2 folds, Hero raises to $5, CO calls $3.50

Flop: ($10.25) K 7 J (2 Players)
Hero bets $7.75, CO calls $7.75

Turn: ($25.75) 9 (2 Players)
Hero bets $17.50, CO calls $17.50

River: ($60.75) 2 (2 Players)
Hero bets $20.50 and is All-In, CO calls $20.50