$5/10 FLO8 Full Ring: L O8 live $2/$5/$10 Board pairs on the river

$5/10 FLO8 Full Ring: L O8 live $2/$5/$10 Board pairs on the river

I have been playing limit omaha h/l at a local casino for the last several weeks.
The competition is pretty weak. Really weak but in this hand i am against two villains who are both solid winning players.

CO is a winning player but he plays with his cards face up. He plays good starting hands but is very readable after the flop. Bets/raises when he has a made hand or monster draw, checks/calls with nut draws and fold to any bet when he missed the flop. I have been 3 betting him when he enters pots to issolate him, since i can steal a lot of pots after the flop. In this game a 3 bet will kill all action and allows me to isolate the CO. (everyone wants to see flops cheap but will not call 3 bet or 4 bet hands) I know he thinks i play too many weak hands but its just against him. He has not changes his play against me yet. I have done this against him the last time i played and we have been at this table for about 2hrs.

SB is a solid player that thinks i am a donk. He has only been at the table for about 15 hands and he was watching our table when i was on the bb with a horrible hand that hit the flop hard and i won. (i don't think he knew i was bb because when he sat down he made a comment about the hand) I also ended up taking a big pot from CO with a below average hand. (i have been warned to stay away from this guy from dealers. He is british and only plays omaha)

$2/$5/ turn/river$10 blind structure. I have put approximate stack size after position. example UTG ($350) I have not accounted for rake.
UTG ($350) limps for $5
Everyone folds to CO
CO ($800) raises the pot to $10
SB ($1,200) calls for $10
BB Hero ($1,500) raises $15 with
UTG folds
CO calls
SB calls.
Pot $50
Flop:
SB checks
Hero bets $5
CO calls $5
SB calls $5
pot $65
Turn
SB bets $10
BB raises $20
CO calls $20
SB calls $10
pot $125
River
SB bets $10
Hero calls $10
CO raises to $20
SB raises to $30

How should i proceed? it is not uncommon for this to continue for whole stacks.

Call, I mean if it goes on forever, at some point you might fold. But the chance that one has a boat and other has a straight flush or something is high enough that you still get 50% quite a bit and the pot is pretty large.

So i shouldn't be concerned about getting quartered? At what point do you stop and fold or do you just call all the way down?
At the table i missed the straight flush option until river card. I think the sb or co would have raised turn with straight flush. Don't you think one would have raised the turn with straight flush or do you think they would pray board would pair?