River value bet, should it be bigger?

[Fatdogs12]

***** Hand History for Game 2770714439 *****
NL Texas Hold'em $5 Buy-in + $1 Entry Fee Trny:16043914 Level:2 Blinds(15/30) - Sunday, September 25, 00:05:45 EDT 2005
Table Table 12252 (Real Money)
Seat 10 is the button
Total number of players : 7
Seat 2: eatraw12 ( $2030 )
Seat 3: let_em_hang ( $650 )
Seat 4: fearless6969 ( $2039 )
Seat 6: slottwizard ( $324 )
Seat 8: jonnyy347 ( $2060 )
Seat 9: JFishhooksJJ ( $715 )
Seat 10: BIGTRUCK1 ( $182 )
Trny:16043914 Level:2
Blinds(15/30)
** Dealing down cards **
Dealt to eatraw12 [ Kh 9h ]
>You have options at Table 12398 Table!.
fearless6969 folds.
slottwizard calls [30].
jonnyy347 calls [30].
JFishhooksJJ folds.
BIGTRUCK1 folds.
eatraw12 calls [15].
>You have options at Table 12403 Table!.
let_em_hang checks.
** Dealing Flop ** [ Kc, 9d, 3d ]
eatraw12 bets [125].
let_em_hang folds.
slottwizard calls [125].
jonnyy347 calls [125].
** Dealing Turn ** [ 7s ]
>You have options at Table 12398 Table!.
eatraw12 bets [150].
slottwizard is all-In [169]
jonnyy347 calls [169].
eatraw12 calls [19].
** Dealing River ** [ Ks ]
eatraw12 bets [350].

If my math is right, thats a little less than 1/2 of the pot. Seems about right to me. Maybe you'll get shown AK in the showdown?

[Fatdogs12]

He called with K9

[lastchance]

Ah well. I might have checked flop, gone for the check-raise, but a bet seems fine here.

I would push the rest of my stack. Anyone with a King isn't folding, but it's unlikely anyone without a King (expect for a set obviously) is calling your orginal bet of 350.