Hand #1: Any read at all? There are quite a few hands I see calling on that board, and you're ahead of a lot of them. There are all kinds of straight draws here (all of which missed), then there's the low flush draw, which hit and which takes away a lot of your outs to overflush. Then there's AJ--as well as QJ, JT, etc.
I think I bet about 2/3 pot here, maybe $80-$85 most generally. That should leave him with $156 after calling, and the pot is now just below $300. If he raises, that means you're getting 3:1. I'd have to fold to a push. But I don't see any other way to determine where you're at in the hand.
I just realized this is 6max again, so I'm not going to comment on the others, as I don't feel completely comfortable with my analyses in that game.