A nut flush draw and a big pot

..grunch..

on that flop, you need to totally jam it after CO raises. There's a gazillion people in that pot and you will be getting the best of it. Party on dude!

it would be not incorrect to jam this turn as well

the checkraise on this river is risky, but the pot is so big it doesn't really matter. I wonder if you'd get more if you just bet out. You might expect a lot of action anyhow.