Straight hand on monotone flop

[Isura]

Villain has a VP$P of around 20 (datamined). No idea how he plays postflop. I am thinking about a better line on the flop. How about flat calling and raising a non-spade turn? I don't see anything I'm beating on the turn. Thoughts?

Party Poker No-Limit Hold'em, $ BB (6 max, 5 handed) FTR converter on zerodivide.cx

Button ($108.35)
SB ($54.35)
BB ($100.70)
UTG ($120.95)
Hero ($305.95)

Preflop: Hero is MP with 9[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.50.
UTG calls $1, Hero calls $1, <font color="#666666">1 fold</font>, SB (poster) completes, BB checks.

Flop: ($4) 6[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">BB bets $1</font>, <font color="#CC3333">UTG raises to $4</font>, <font color="#CC3333">Hero raises to $15</font>, SB folds, BB calls $14, UTG folds.

Turn: ($38) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $25</font>, BB is all-in, <font color="#CC3333">Hero </font> ?