I wonder what's the general opinion about this hand. I think you can play this hand in different ways but I wonder what's the most optimal line.
Looking back at it, I think I played it fine, besides maybe betting lower on flop (40% pot) to induce more bluffs from villain and then 3bet his raise to fold out a big part of his range which beats us or has some equity on us. Once he shoves over us, we are committed but I don't mind. (still wondering if it isn't a bit spewy against this nit) 
Maybe this line is a bit more + EV: x/r flop and fold to 3bet. When villain calls the x/r we can put it in on every 3, spade (8 and A?)
PokerStars - $0.50 NL FAST (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4
BTN: 122.1 BB (VPIP: 18.02, PFR: 12.98, 3Bet Preflop: 4.31, Hands: 4,627)
Hero (SB): 133.38 BB
BB: 101.5 BB (VPIP: 18.52, PFR: 14.81, 3Bet Preflop: 7.14, Hands: 29)
UTG: 147.76 BB (VPIP: 23.58, PFR: 18.00, 3Bet Preflop: 5.55, Hands: 8,485)
MP: 102.84 BB (VPIP: 18.82, PFR: 12.94, 3Bet Preflop: 6.25, Hands: 86)
CO: 101.48 BB (VPIP: 19.20, PFR: 15.40, 3Bet Preflop: 6.34, Hands: 916)
Hero posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has A♠ 4♠
fold, fold, fold, BTN raises to 2.5 BB, Hero raises to 8 BB, fold, BTN calls 5.5 BB
Flop: (17 BB, 2 players) 6♦ 5♥ 7♠
Hero bets 10.5 BB, BTN raises to 27 BB, Hero raises to 61.5 BB, BTN raises to 114.1 BB and is all-in, Hero calls 52.6 BB
Turn: (245.2 BB, 2 players) 4♥
River: (245.2 BB, 2 players) 3♦
Players agreed to run it twice.
Turn #2: (245.2 BB, 2 players) K♣
River #2: (245.2 BB, 2 players) Q♥
Spoiler
Hero shows A♠ 4♠ (Straight, Seven High)
Board #1 (Pre 55%, Flop 32%, Turn 20%)
(High Card, Ace)
Board #2 (Pre 54%, Flop 30%, Turn 17%)
BTN shows 7♣ 6♣ (Straight, Seven High)
Board #1 (Pre 45%, Flop 68%, Turn 80%)
(Two Pair, Sevens and Sixes)
Board #2 (Pre 46%, Flop 70%, Turn 83%)
BTN wins 60.3 BB
BTN wins 120.6 BB
Hero wins 60.3 BB
