JJ what an annoying hand

[soko]

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***** Hand History for Game 1306397768 *****
NL Hold'em Trny:7925870 Level:4 Blinds (25/50) - Wednesday, December 15, 22:42:33 EDT 2004
Table 3 - Table(172319) Table #2 (Real Money)
Seat 1 is the button
Total number of players : 8
Seat 1: MexMonks ( $705 )
Seat 2: Paul_K1947 ( $970 )
Seat 3: Plumpbutt ( $1185 )
Seat 4: soko4 ( $980 )
Seat 6: jlewis96 ( $600 )
Seat 8: sport420 ( $980 )
Seat 9: onedge53 ( $1880 )
Seat 10: sushi4747 ( $1760 )
Trny:7925870 Level:4
Blinds (25/50)
** Dealing down cards **
Dealt to soko4 [ Jc Jd ]
soko4 raises [150].
sport420 folds.
onedge53 folds.
sushi4747 calls [150].
MexMonks calls [150].
Paul_K1947 folds.
Plumpbutt folds.
** Dealing Flop ** [ 2c, Kc, 9h ]
soko4 checks.
sushi4747 checks.
MexMonks checks.
** Dealing Turn ** [ 7h ]
soko4 bets [125].
sushi4747 folds.
MexMonks calls [125].
** Dealing River ** [ 3c ]
soko4 checks.
MexMonks is all-In.
soko4 folds.

It's so early in the tourney I decide to fold, what would you do in this situation? It's was so early I thought I would wait for a better spot. His all-in was $400 something I would have had about $200 left if I called and lost. My thoughts are I shouldnt have shown weakness on the river, but it seemed to me he was drawing at the time and I wouldn't have disregarded the possibility of slowplaying Kings.