Villain is
SB: €63.28 (VPIP: 50.00, PFR: 44.44, 3Bet Preflop: 43.75, Hands: 55 and has a fold to 3bet 75
, not so much tho, but enough to understand how this type of player actually plays.
I 4bet to get in in but he flats, 
What about preflop, should I make a larger 4bet?

PokerStars - €0.25 NL (6 max) - Holdem - 5 players
Hand converted by PokerTracker 4

CO (CO): €57.02 (VPIP: 23.15, PFR: 18.38, 3Bet Preflop: 6.96, Hands: 5,352)
Hero (BTN): €29.69
SB (SB): €63.28 (VPIP: 50.00, PFR: 44.44, 3Bet Preflop: 43.75, Hands: 55)
BB (BB): €27.70 (VPIP: 19.08, PFR: 10.69, 3Bet Preflop: 0.00, Hands: 137)
UTG (UTG): €48.48 (VPIP: 22.39, PFR: 18.64, 3Bet Preflop: 8.96, Hands: 4,539)

SB posts SB €0.10, BB posts BB €0.25

Dealt to Hero: Ac Qh

fold, fold, Hero raises to €0.50, SB raises to €1.75, fold, Hero raises to €4.25, SB calls €2.50

Flop (€8.75, 2 players): 6d 9s 9h  
SB checks, Hero bets €4.96, fold

Hero wins €8.27

SB checks, Hero?