$5 NLHE 6-max: (Zoom): Multiway TPTK facing aggression

[Hermus]

GGPoker, Hold'em No Limit - $0.02/$0.05 - 6 players
Hand delivered by CardsChat

UTG (Hero): $5.16 (103 bb)
MP: $5.02 (100 bb)
CO: $6.04 (121 bb)
BU: $9.28 (186 bb)
SB: $3.02 (60 bb)
BB: $5.82 (116 bb)

Pre-Flop: ($0.07) Hero is UTG with A♦ K♥
Hero raises to $0.11, MP calls $0.11, 1 fold, BTN calls $0.11, SB calls $0.09, 1 fold

Flop: ($0.49) 7♥ 8♣ K♠ (4 players)
SB checks, Hero bets $0.38, MP folds, BTN raises to $1.06, SB calls $1.06, Hero calls $0.68

Turn: ($3.67) 9♠ (3 players)
SB checks, Hero checks, BTN bets $4.41, SB calls $1.85 (all-in), UTG (Hero) ?

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Villain 1 (BU) is a weak reg. Villain 2 (SB) is a loose passive recreational. The flop is kinda disconnected and favours my range so I bet a lot of my range here. I size up a bit because there are 3 ppl left to act after me. Is that the correct choice? Because my range is so wide I don't want to fold TPTK to the BU raise even though I don't really think this particular player is capable of bluffing and SB has also shown strength by flatting. Thoughts? Turn is a pretty clear cut fold against a nitty player type/pool, especially because a player is all in so I get to see the cards anyway. If you disagree please let me know.

 

[Casey55]

I prefer a larger sizing pre, you C-bet flop for 2/3 in 4way pot I don't think BTN should be bluffing all that often and his raising range is like 2-pair + once SB flats when we are still left to act I would certainly fold on the flop I think its very likely someone has us dominated.

 

[KKillerss]

I agree. I can see one of them on a tilt or donk move, but both of them? Straight or trips one might have.
Sometimes we get in a hand targeting one bad player, that showed hand after hand how clueless he is, but it must be our priority to no act clueless either. Sometimes they hit the nuts.