400 NL- Ugh, fold?

[AdamBragar]

This hand was wacky, especially cause I checked the flop (probably not a standard line for me here). No real reads on the opponent in this hand.

PokerStars No-Limit Hold'em, $4 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($394)
SB ($420.50)
BB ($281.50)
UTG ($232.70)
UTG+1 ($541.65)
MP1 ($387.10)
MP2 ($234)
MP3 ($412.75)
Hero ($663.30)

Preflop: Hero is with KJcc (converter messed up) . UTG posts a blind of $4.
<font color="#666666">5 folds</font>, <font color="#CC3333">Hero raises to $16</font>, <font color="#666666">2 folds</font>.

Flop: ($24) 9[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

Turn: ($24) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets $34</font>, <font color="#CC3333">Hero raises to $80</font>, SB calls $46.

River: ($184) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets $150</font>, <font color="#CC3333">SB raises to $322.5</font>, CO ???



First, what does everyone think of the flop check, especially if I plan to raise almost any turn? Second, fold the river?