25NL straight with flush on board

[TStoneMBD]

villain is unknown with no stats. my table image is very aggressive as im raising a lot of hands preflop. what line should i be taking here? can i bet fold the river? if not because were not deep enough, how deep do we need to be to make that play? villain has $34.25 going into the river

Poker Stars, $0.10/$0.25 NL Hold'em Cash Game, 9 Players
LeggoPoker Hand History Converter

MP1: $11.75
MP2: $96.95
Hero (CO): $52
BTN: $46
SB: $20.65
BB: $30.55
UTG: $38.65
UTG+1: $31.25
UTG+2: $13.40

Pre-Flop: Q[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/diamond.gif[/img] dealt to Hero (CO)
5 folds, <font color="red">Hero raises to $1</font>, BTN calls $1, 2 folds

Flop: ($2.35) K[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">Hero bets $2</font>, <font color="red">BTN raises to $5</font>, Hero calls $3

Turn: ($12.35) A[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $6.75</font>, Hero calls $6.75

River: ($25.85) 4[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $15</font>, <font color="red">


~erika