Re: KJ tough flop, many players
 

Sorry I missed the straight draw here. I think with the straight draw, you may be able to call the turn here to see what the river brings. When you miss on the river I think it would be safe to fold. Once you call and there is a check raise you almost have to fold w/o a read on these players.

Re: KJ tough flop, many players
 

fold the first bet on the river unless you have some bizarre read like "donk bluffs turn on delayed flush draw". rest looks fine.