#1:
I would ck the river bc I can't see what worse will call you with the flush getting there. Also it is always good to know his range here. So there is more EV to be gained by seeing his range than by making a really thin VBet on the river imo.
#2:
VBet for sure.
#3:
If he doesnt fold to 3B I wouldn't 3B it. I would also 3B smaller to 4$.
Post flop it is reeally villains dependant. Does he play fit or fold post? If you think he has Ax or Jx on the river I don't understand the river bet? Isn't he folding with Jx and calling with Ax?
#4:
I think c/f too. Again it depends on his range but we are barely ahead vs PP with one diamond so I don't think we can value bet that thinly here. Not too sure but that's what I think.
