BTN: 141.5 BB
SB: 108.2 BB
Hero (BB): 172.8 BB
UTG: 130.8 BB
MP: 200.2 BB
CO: 153 BB

SB posts SB 0.5 BB, Hero posts BB 1 BB

Pre Flop: (pot: 1.5 BB) Hero has 9d Qd
fold, fold, fold, fold, SB raises to 3 BB, Hero raises to 8 BB, SB calls 5 BB

Flop : (16 BB, 2 players) 4d 2d 7d
SB checks, Hero bets 5.2 BB, SB calls 5.2 BB

Turn : (26.4 BB, 2 players) Kh
SB checks, Hero bets 17.6 BB, SB calls 17.6 BB

River : (61.6 BB, 2 players) 2h
SB checks...

Preflop:
- I think this hand is okay to 3b small frequency. Normally mix 75:25

Flop:
- I like checking with some of my higher Ax flushes while betting overpairs+FD and lower flushes since they unblock Villain's range.
- Bluffs would be nut FD+ 2nd nFD
- range check on this flop could also be a good option.

Turn:
- when they don't raise, I assign them less sets and Kx flushes. I think they can slowplay some nut flushes.
- I like betting polar on this Turn because they can have KdXx combinations.

River:
- This is my main question. Since we assume they don't have as many boats in their range, would we be comfortable shoving or checking?

I'm open to other advice on earlier streets as well. Thank you