NL25 TT overpair river question

[MAA]

Not much info on both player; they passed under the radar. I have been very aggressive on this table. pfr 3 bettor 23/15/oo/26

Full Tilt Poker, $0.10/$0.25 NL Hold'em Cash Game, 5 Players
LeggoPoker.com - Hand History Converter

Hero (UTG): $25.35
CO: $50.10
BTN: $31
SB: $25.10
BB: $25

Pre-Flop: T[img]/images/graemlins/heart.gif[/img] T[img]/images/graemlins/diamond.gif[/img] dealt to Hero (UTG)
<font color="red">Hero raises to $1</font>, <font color="red">CO raises to $3</font>, 2 folds, BB calls $2.75, Hero calls $2

Flop: ($9.10) 2[img]/images/graemlins/diamond.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/club.gif[/img] (3 Players)
<font color="red">BB bets $4</font>, Hero calls $4

Turn: ($17.10) 4[img]/images/graemlins/heart.gif[/img] (2 Players)
BB checks, Hero checks

River: ($17.10) J[img]/images/graemlins/spade.gif[/img] (2 Players)
BB checks, <font color="red">Hero bets $7.25</font>

Pretty sure preflop and flop is good, but here do you bet river? When he lead preflop I put him on either a draw or a small pp that didn't want to go for a cr. Obviously draw didn't hit. Am I getting value from 88, 99 a 7 or is this spew. What do you do on river?