Limp in, flop a str8: what's your move?

WillHill blinds (50/100) £10 112 starters, maybe 60 still in, I've been getting good cards for a few hands and playing them fast so I reckon people think I'm stealing.

Table "Tourney 1569954 - 3" Seat 7 is the button.
Seat 1: Howard12 (2160 in chips)
Seat 2: _lock_ (1350 in chips)
Seat 3: vegetable (4845 in chips)
Seat 4: REFLEX (1090 in chips)
Seat 6: Registrar (2705 in chips)
Seat 7: Karloss (1835 in chips)
Seat 8: rightpaw (1380 in chips)
Seat 9: Rivergold (2570 in chips)
Seat 10: Paulux (1215 in chips)
rightpaw: posts small blind 50
Rivergold: posts big blind 100
----- HOLE CARDS -----
dealt to Registrar [7d Td]
Paulux: folds
Howard12: folds
_lock_: folds
vegetable: calls 100
REFLEX: folds
Registrar: calls 100
Karloss: calls 100
rightpaw: calls 50
Rivergold: checks
----- FLOP ----- [9s 8d 6s]

rightpaw: bets 100
Rivergold: calls 100
vegetable: calls 100

What's your move here?


Registrar: raises to 400
Karloss: folds
rightpaw: calls 300
Rivergold: folds
vegetable: calls 300


----- TURN ----- [9s 8d 6s][8h]
rightpaw: checks
vegetable: checks

Registrar?

I say push. you probably have the best hand here, you you may get called if anyone has an 8 or an overpair.

Is it not worth trying to extract more money?

Yuck, did someone just hit a boat on the turn?

[Gert505]

I would bet about half the pot on the turn, so any flush draw does not have the odds to call you. I think that a push won't make you any money. You will only be called by hands that beat you. If your bet is called by anyone, then you can fear the boat. I would then check behind on the river (given the opportunity) or call a small bet.

So would you check?